Add m-esr52 at 52.6.0

313 files changed, 11980 insertions, 0 deletions

diff --git a/dom/browser-element/mochitest/async.js b/dom/browser-element/mochitest/async.js
new file mode 100644
index 0000000000..d0007fa096
--- /dev/null
+++ b/dom/browser-element/mochitest/async.js
@@ -0,0 +1,78 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This is an approximate implementation of ES7's async-await pattern.
+ * see: https://github.com/tc39/ecmascript-asyncawait
+ *
+ * It allows for simple creation of async function and "tasks".
+ *
+ * For example:
+ *
+ *  var myThinger = {
+ *    doAsynThing: async(function*(url){
+ *      var result = yield fetch(url);
+ *      return process(result);
+ *    });
+ * }
+ *
+ * And Task-like things can be created as follows:
+ *
+ * var myTask = async(function*{
+ *   var result = yield fetch(url);
+ *   return result;
+ * });
+ * //returns a promise
+ *
+ * myTask().then(doSomethingElse);
+ *
+ */
+
+(function(exports) {
+  "use strict";
+  function async(func, self) {
+    return function asyncFunction() {
+      const functionArgs = Array.from(arguments);
+      return new Promise(function(resolve, reject) {
+        var gen;
+        if (typeof func !== "function") {
+          reject(new TypeError("Expected a Function."));
+        }
+        //not a generator, wrap it.
+        if (func.constructor.name !== "GeneratorFunction") {
+          gen = (function*() {
+            return func.apply(self, functionArgs);
+          }());
+        } else {
+          gen = func.apply(self, functionArgs);
+        }
+        try {
+          step(gen.next(undefined));
+        } catch (err) {
+          reject(err);
+        }
+
+        function step({value, done}) {
+          if (done) {
+            return resolve(value);
+          }
+          if (value instanceof Promise) {
+            return value.then(
+              result => step(gen.next(result)),
+              error => {
+                try {
+                  step(gen.throw(error));
+                } catch (err) {
+                  throw err;
+                }
+              }
+            ).catch(err => reject(err));
+          }
+          step(gen.next(value));
+        }
+      });
+    };
+  }
+  exports.async = async;
+}(this || self));
diff --git a/dom/browser-element/mochitest/audio.ogg b/dom/browser-element/mochitest/audio.ogg
new file mode 100644
index 0000000000..44ab64f811
--- /dev/null
+++ b/dom/browser-element/mochitest/audio.ogg
diff --git a/dom/browser-element/mochitest/browserElementTestHelpers.js b/dom/browser-element/mochitest/browserElementTestHelpers.js
new file mode 100644
index 0000000000..004b25333d
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElementTestHelpers.js
@@ -0,0 +1,306 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Helpers for managing the browser frame preferences.
+"use strict";
+
+function _getPath() {
+  return window.location.pathname
+               .substring(0, window.location.pathname.lastIndexOf('/'))
+               .replace("/priority", "");
+}
+
+const browserElementTestHelpers = {
+  _getBoolPref: function(pref) {
+    try {
+      return SpecialPowers.getBoolPref(pref);
+    }
+    catch (e) {
+      return undefined;
+    }
+  },
+
+  _setPref: function(pref, value) {
+    this.lockTestReady();
+    if (value !== undefined && value !== null) {
+      SpecialPowers.pushPrefEnv({'set': [[pref, value]]}, this.unlockTestReady.bind(this));
+    } else {
+      SpecialPowers.pushPrefEnv({'clear': [[pref]]}, this.unlockTestReady.bind(this));
+    }
+  },
+
+  _setPrefs: function() {
+    this.lockTestReady();
+    SpecialPowers.pushPrefEnv({'set': Array.slice(arguments)}, this.unlockTestReady.bind(this));
+  },
+
+  _testReadyLockCount: 0,
+  _firedTestReady: false,
+  lockTestReady: function() {
+    this._testReadyLockCount++;
+  },
+
+  unlockTestReady: function() {
+    this._testReadyLockCount--;
+    if (this._testReadyLockCount == 0 && !this._firedTestReady) {
+      this._firedTestReady = true;
+      dispatchEvent(new Event("testready"));
+    }
+  },
+
+  enableProcessPriorityManager: function() {
+    this._setPrefs(
+      ['dom.ipc.processPriorityManager.BACKGROUND.LRUPoolLevels', 2],
+      ['dom.ipc.processPriorityManager.BACKGROUND_PERCEIVABLE.LRUPoolLevels', 2],
+      ['dom.ipc.processPriorityManager.testMode', true],
+      ['dom.ipc.processPriorityManager.enabled', true]
+    );
+  },
+
+  setClipboardPlainTextOnlyPref: function(value) {
+    this._setPref('clipboard.plainTextOnly', value);
+  },
+
+  setEnabledPref: function(value) {
+    this._setPrefs(['dom.mozBrowserFramesEnabled', value],
+                   ['network.disable.ipc.security', value]);
+  },
+
+  setupAccessibleCaretPref: function() {
+    this._setPref('layout.accessiblecaret.enabled', true);
+    // Disable hide carets for mouse input for select-all tests so that we can
+    // get mozbrowsercaretstatechanged events.
+    this._setPref('layout.accessiblecaret.hide_carets_for_mouse_input', false);
+  },
+
+  getOOPByDefaultPref: function() {
+    return this._getBoolPref("dom.ipc.browser_frames.oop_by_default");
+  },
+
+  addPermission: function() {
+    this.lockTestReady();
+    SpecialPowers.pushPermissions(
+      [{'type': "browser", 'allow': 1, 'context': document}],
+      this.unlockTestReady.bind(this));
+  },
+
+  _observers: [],
+
+  // This function is a wrapper which lets you register an observer to one of
+  // the process priority manager's test-only topics.  observerFn should be a
+  // function which takes (subject, topic, data).
+  //
+  // We'll clean up any observers you add at the end of the test.
+  addProcessPriorityObserver: function(processPriorityTopic, observerFn) {
+    var topic = "process-priority-manager:TEST-ONLY:" + processPriorityTopic;
+
+    // SpecialPowers appears to require that the observer be an object, not a
+    // function.
+    var observer = {
+      observe: observerFn
+    };
+
+    SpecialPowers.addObserver(observer, topic, /* weak = */ false);
+    this._observers.push([observer, topic]);
+  },
+
+  cleanUp: function() {
+    for (var i = 0; i < this._observers.length; i++) {
+      SpecialPowers.removeObserver(this._observers[i][0],
+                                   this._observers[i][1]);
+    }
+  },
+
+  // Some basically-empty pages from different domains you can load.
+  'emptyPage1': 'http://example.com' + _getPath() + '/file_empty.html',
+  'fileEmptyPage1': 'file_empty.html',
+  'emptyPage2': 'http://example.org' + _getPath() + '/file_empty.html',
+  'emptyPage3': 'http://test1.example.org' + _getPath() + '/file_empty.html',
+  'focusPage': 'http://example.org' + _getPath() + '/file_focus.html',
+};
+
+// Returns a promise which is resolved when a subprocess is created.  The
+// argument to resolve() is the childID of the subprocess.
+function expectProcessCreated(/* optional */ initialPriority) {
+  return new Promise(function(resolve, reject) {
+    var observed = false;
+    browserElementTestHelpers.addProcessPriorityObserver(
+      "process-created",
+      function(subject, topic, data) {
+        // Don't run this observer twice, so we don't ok(true) twice.  (It's fine
+        // to resolve a promise twice; the second resolve() call does nothing.)
+        if (observed) {
+          return;
+        }
+        observed = true;
+
+        var childID = parseInt(data);
+        ok(true, 'Got new process, id=' + childID);
+        if (initialPriority) {
+          expectPriorityChange(childID, initialPriority).then(function() {
+            resolve(childID);
+          });
+        } else {
+          resolve(childID);
+        }
+      }
+    );
+  });
+}
+
+// Just like expectProcessCreated(), except we'll call ok(false) if a second
+// process is created.
+function expectOnlyOneProcessCreated(/* optional */ initialPriority) {
+  var p = expectProcessCreated(initialPriority);
+  p.then(function() {
+    expectProcessCreated().then(function(childID) {
+      ok(false, 'Got unexpected process creation, childID=' + childID);
+    });
+  });
+  return p;
+}
+
+// Returns a promise which is resolved or rejected the next time the process
+// childID changes its priority. We resolve if the priority matches
+// expectedPriority, and we reject otherwise.
+
+function expectPriorityChange(childID, expectedPriority) {
+  return new Promise(function(resolve, reject) {
+    var observed = false;
+    browserElementTestHelpers.addProcessPriorityObserver(
+      'process-priority-set',
+      function(subject, topic, data) {
+        if (observed) {
+          return;
+        }
+
+        var [id, priority] = data.split(":");
+        if (id != childID) {
+          return;
+        }
+
+        // Make sure we run the is() calls in this observer only once, otherwise
+        // we'll expect /every/ priority change to match expectedPriority.
+        observed = true;
+
+        is(priority, expectedPriority,
+           'Expected priority of childID ' + childID +
+           ' to change to ' + expectedPriority);
+
+        if (priority == expectedPriority) {
+          resolve();
+        } else {
+          reject();
+        }
+      }
+    );
+  });
+}
+
+// Returns a promise which is resolved or rejected the next time the
+// process childID changes its priority.  We resolve if the expectedPriority
+// matches the priority and the LRU parameter matches expectedLRU and we
+// reject otherwise.
+
+function expectPriorityWithLRUSet(childID, expectedPriority, expectedLRU) {
+  return new Promise(function(resolve, reject) {
+    var observed = false;
+    browserElementTestHelpers.addProcessPriorityObserver(
+      'process-priority-with-LRU-set',
+      function(subject, topic, data) {
+        if (observed) {
+          return;
+        }
+
+        var [id, priority, lru] = data.split(":");
+        if (id != childID) {
+          return;
+        }
+
+        // Make sure we run the is() calls in this observer only once,
+        // otherwise we'll expect /every/ priority/LRU change to match
+        // expectedPriority/expectedLRU.
+        observed = true;
+
+        is(lru, expectedLRU,
+           'Expected LRU ' + lru +
+           ' of childID ' + childID +
+           ' to change to ' + expectedLRU);
+
+        if ((priority == expectedPriority) && (lru == expectedLRU)) {
+          resolve();
+        } else {
+          reject();
+        }
+      }
+    );
+  });
+}
+
+// Returns a promise which is resolved the first time the given iframe fires
+// the mozbrowser##eventName event.
+function expectMozbrowserEvent(iframe, eventName) {
+  return new Promise(function(resolve, reject) {
+    iframe.addEventListener('mozbrowser' + eventName, function handler(e) {
+      iframe.removeEventListener('mozbrowser' + eventName, handler);
+      resolve(e);
+    });
+  });
+}
+
+// Set some prefs:
+//
+//  * browser.pagethumbnails.capturing_disabled: true
+//
+//    Disable tab view; it seriously messes us up.
+//
+//  * dom.ipc.browser_frames.oop_by_default
+//
+//    Enable or disable OOP-by-default depending on the test's filename.  You
+//    can still force OOP on or off with <iframe mozbrowser remote=true/false>,
+//    at least until bug 756376 lands.
+//
+//  * dom.ipc.tabs.disabled: false
+//
+//    Allow us to create OOP frames.  Even if they're not the default, some
+//    "in-process" tests create OOP frames.
+//
+//  * network.disable.ipc.security: true
+//
+//    Disable the networking security checks; our test harness just tests
+//    browser elements without sticking them in apps, and the security checks
+//    dislike that.
+//
+//    Unfortunately setting network.disable.ipc.security to false before the
+//    child process(es) created by this test have shut down can cause us to
+//    assert and kill the child process.  That doesn't cause the tests to fail,
+//    but it's still scary looking.  So we just set the pref to true and never
+//    pop that value.  We'll rely on the tests which test IPC security to set
+//    it to false.
+//
+//  * security.mixed_content.block_active_content: false
+//
+//    Disable mixed active content blocking, so that tests can confirm that mixed
+//    content results in a broken security state.
+
+(function() {
+  var oop = location.pathname.indexOf('_inproc_') == -1;
+
+  browserElementTestHelpers.lockTestReady();
+  SpecialPowers.setBoolPref("network.disable.ipc.security", true);
+  SpecialPowers.pushPrefEnv({set: [["browser.pagethumbnails.capturing_disabled", true],
+                                   ["dom.ipc.browser_frames.oop_by_default", oop],
+                                   ["dom.ipc.tabs.disabled", false],
+                                   ["security.mixed_content.block_active_content", false]]},
+                            browserElementTestHelpers.unlockTestReady.bind(browserElementTestHelpers));
+})();
+
+addEventListener('unload', function() {
+  browserElementTestHelpers.cleanUp();
+});
+
+// Wait for the load event before unlocking the test-ready event.
+browserElementTestHelpers.lockTestReady();
+addEventListener('load', function() {
+  SimpleTest.executeSoon(browserElementTestHelpers.unlockTestReady.bind(browserElementTestHelpers));
+});
diff --git a/dom/browser-element/mochitest/browserElement_ActiveStateChange.js b/dom/browser-element/mochitest/browserElement_ActiveStateChange.js
new file mode 100644
index 0000000000..cfbc1cb1e1
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_ActiveStateChange.js
@@ -0,0 +1,108 @@
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var fileURL = 'chrome://mochitests/content/chrome/dom/browser-element/mochitest/file_browserElement_ActiveStateChange.html';
+var generator = runTests();
+var testFrame;
+var ac;
+
+function assert(aVal, aMessage) {
+  return (!aVal) ? error(aMessage) : 0;
+}
+
+function error(aMessage) {
+  ok(false, "Error : " + aMessage);
+  finish();
+}
+
+function continueTest() {
+  try {
+    generator.next();
+  } catch (e if e instanceof StopIteration) {
+    error("Stop test because of exception!");
+  }
+}
+
+function finish() {
+  document.body.removeChild(testFrame);
+  SimpleTest.finish();
+}
+
+function setCommand(aArg) {
+  assert(!!ac, "Audio channel doesn't exist!");
+  info("# Command = " + aArg);
+
+  testFrame.src = fileURL + '#' + aArg;
+  var expectedActive = false;
+  switch (aArg) {
+    case 'play':
+      expectedActive = true;
+      break;
+    case 'pause':
+      expectedActive = false;
+      break;
+    default :
+      error("Undefined command!");
+  }
+
+  ac.onactivestatechanged = () => {
+    ac.onactivestatechanged = null;
+    ac.isActive().onsuccess = (e) => {
+      is(expectedActive, e.target.result,
+         "Correct active state = " + expectedActive);
+      continueTest();
+    }
+  };
+}
+
+function runTests() {
+  setCommand('play');
+  yield undefined;
+
+  setCommand('pause');
+  yield undefined;
+
+  finish();
+  yield undefined;
+}
+
+function setupTestFrame() {
+  testFrame = document.createElement('iframe');
+  testFrame.setAttribute('mozbrowser', 'true');
+  testFrame.src = fileURL;
+
+  function loadend() {
+    testFrame.removeEventListener('mozbrowserloadend', loadend);
+    ok("allowedAudioChannels" in testFrame, "allowedAudioChannels exist");
+    var channels = testFrame.allowedAudioChannels;
+    is(channels.length, 9, "9 audio channel by default");
+
+    ac = channels[0];
+
+    ok(ac instanceof BrowserElementAudioChannel, "Correct class");
+    ok("isActive" in ac, "isActive exists");
+    ok("onactivestatechanged" in ac, "onactivestatechanged exists");
+
+    generator.next();
+  }
+
+  function alertError(e) {
+    testFrame.removeEventListener('mozbrowsershowmodalprompt', alertError);
+    var message = e.detail.message
+    error(message);
+  }
+
+  testFrame.addEventListener('mozbrowserloadend', loadend);
+  testFrame.addEventListener('mozbrowsershowmodalprompt', alertError);
+  document.body.appendChild(testFrame);
+}
+
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set': [["b2g.system_startup_url", window.location.href]]},
+                            function() {
+    SimpleTest.executeSoon(setupTestFrame);
+  });
+});
+
diff --git a/dom/browser-element/mochitest/browserElement_Alert.js b/dom/browser-element/mochitest/browserElement_Alert.js
new file mode 100644
index 0000000000..3c7c507205
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Alert.js
@@ -0,0 +1,304 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that alert works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+var numPendingChildTests = 0;
+var iframe;
+var mm;
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  mm = SpecialPowers.getBrowserFrameMessageManager(iframe);
+  mm.addMessageListener('test-success', function(msg) {
+    numPendingChildTests--;
+    ok(true, SpecialPowers.wrap(msg).json);
+  });
+  mm.addMessageListener('test-fail', function(msg) {
+    numPendingChildTests--;
+    ok(false, SpecialPowers.wrap(msg).json);
+  });
+
+  // Wait for the initial load to finish, then navigate the page, then wait
+  // for that load to finish, then start test1.
+  iframe.addEventListener('mozbrowserloadend', function loadend() {
+    iframe.removeEventListener('mozbrowserloadend', loadend);
+    iframe.src = browserElementTestHelpers.emptyPage1;
+
+    iframe.addEventListener('mozbrowserloadend', function loadend2() {
+      iframe.removeEventListener('mozbrowserloadend', loadend2);
+      SimpleTest.executeSoon(test1);
+    });
+  });
+
+}
+
+function test1() {
+  iframe.addEventListener('mozbrowsershowmodalprompt', test2);
+
+  // Do window.alert within the iframe, then modify the global |testState|
+  // after the alert.
+  var script = 'data:,\
+    this.testState = 0; \
+    content.alert("Hello, world!"); \
+    this.testState = 1; \
+  ';
+
+  mm.loadFrameScript(script, /* allowDelayedLoad = */ false);
+
+  // Triggers a mozbrowsershowmodalprompt event, which sends us down to test2.
+}
+
+// test2 is a mozbrowsershowmodalprompt listener.
+function test2(e) {
+  iframe.removeEventListener("mozbrowsershowmodalprompt", test2);
+
+  is(e.detail.message, 'Hello, world!');
+  e.preventDefault(); // cause the alert to block.
+
+  SimpleTest.executeSoon(function() { test2a(e); });
+}
+
+function test2a(e) {
+  // The iframe should be blocked on the alert call at the moment, so testState
+  // should still be 0.
+  var script = 'data:,\
+    if (this.testState === 0) { \
+      sendAsyncMessage("test-success", "1: Correct testState"); \
+    } \
+    else { \
+      sendAsyncMessage("test-fail", "1: Wrong testState: " + this.testState); \
+    }';
+
+  mm.loadFrameScript(script, /* allowDelayedLoad = */ false);
+  numPendingChildTests++;
+
+  waitForPendingTests(function() { test3(e); });
+}
+
+function test3(e) {
+  // Now unblock the iframe and check that the script completed.
+  e.detail.unblock();
+
+  var script2 = 'data:,\
+    if (this.testState === 1) { \
+      sendAsyncMessage("test-success", "2: Correct testState"); \
+    } \
+    else { \
+      sendAsyncMessage("test-try-again", "2: Wrong testState (for now): " + this.testState); \
+    }';
+
+  // Urgh.  e.unblock() didn't necessarily unblock us immediately, so we have
+  // to spin and wait.
+  function onTryAgain() {
+    SimpleTest.executeSoon(function() {
+      //dump('onTryAgain\n');
+      mm.loadFrameScript(script2, /* allowDelayedLoad = */ false);
+    });
+  }
+
+  mm.addMessageListener('test-try-again', onTryAgain);
+  numPendingChildTests++;
+
+  onTryAgain();
+  waitForPendingTests(function() {
+    mm.removeMessageListener('test-try-again', onTryAgain);
+    test4();
+  });
+}
+
+function test4() {
+  // Navigate the iframe while an alert is pending.  This shouldn't screw
+  // things up.
+
+  iframe.addEventListener("mozbrowsershowmodalprompt", test5);
+
+  var script = 'data:,content.alert("test4");';
+  mm.loadFrameScript(script, /* allowDelayedLoad = */ false);
+}
+
+// test4 is a mozbrowsershowmodalprompt listener.
+function test5(e) {
+  iframe.removeEventListener('mozbrowsershowmodalprompt', test5);
+
+  is(e.detail.message, 'test4');
+  e.preventDefault(); // cause the page to block.
+
+  SimpleTest.executeSoon(test5a);
+}
+
+function test5a() {
+  iframe.addEventListener('mozbrowserloadend', test5b);
+  iframe.src = browserElementTestHelpers.emptyPage2;
+}
+
+function test5b() {
+  iframe.removeEventListener('mozbrowserloadend', test5b);
+  SimpleTest.executeSoon(test6);
+}
+
+// Test nested alerts
+var promptBlockers = [];
+function test6() {
+  iframe.addEventListener("mozbrowsershowmodalprompt", test6a);
+
+  var script = 'data:,\
+    this.testState = 0; \
+    content.alert(1); \
+    this.testState = 3; \
+  ';
+  mm.loadFrameScript(script, /* allowDelayedLoad = */ false);
+}
+
+function test6a(e) {
+  iframe.removeEventListener("mozbrowsershowmodalprompt", test6a);
+
+  is(e.detail.message, '1');
+  e.preventDefault(); // cause the alert to block.
+  promptBlockers.push(e);
+
+  SimpleTest.executeSoon(test6b);
+}
+
+function test6b() {
+  var script = 'data:,\
+    if (this.testState === 0) { \
+      sendAsyncMessage("test-success", "1: Correct testState"); \
+    } \
+    else { \
+      sendAsyncMessage("test-fail", "1: Wrong testState: " + this.testState); \
+    }';
+  mm.loadFrameScript(script, /* allowDelayedLoad = */ false);
+  numPendingChildTests++;
+
+  waitForPendingTests(test6c);
+}
+
+function test6c() {
+  iframe.addEventListener("mozbrowsershowmodalprompt", test6d);
+
+  var script = 'data:,\
+    this.testState = 1; \
+    content.alert(2); \
+    this.testState = 2; \
+  ';
+  mm.loadFrameScript(script, /* allowDelayedLoad = */ false);
+}
+
+function test6d(e) {
+  iframe.removeEventListener("mozbrowsershowmodalprompt", test6d);
+
+  is(e.detail.message, '2');
+  e.preventDefault(); // cause the alert to block.
+  promptBlockers.push(e);
+
+  SimpleTest.executeSoon(test6e);
+}
+
+function test6e() {
+  var script = 'data:,\
+    if (this.testState === 1) { \
+      sendAsyncMessage("test-success", "2: Correct testState"); \
+    } \
+    else { \
+      sendAsyncMessage("test-fail", "2: Wrong testState: " + this.testState); \
+    }';
+  mm.loadFrameScript(script, /* allowDelayedLoad = */ false);
+  numPendingChildTests++;
+
+  waitForPendingTests(test6f);
+}
+
+function test6f() {
+  var e = promptBlockers.pop();
+  // Now unblock the iframe and check that the script completed.
+  e.detail.unblock();
+
+  var script2 = 'data:,\
+    if (this.testState === 2) { \
+      sendAsyncMessage("test-success", "3: Correct testState"); \
+    } \
+    else { \
+      sendAsyncMessage("test-try-again", "3: Wrong testState (for now): " + this.testState); \
+    }';
+
+  // Urgh.  e.unblock() didn't necessarily unblock us immediately, so we have
+  // to spin and wait.
+  function onTryAgain() {
+    SimpleTest.executeSoon(function() {
+      //dump('onTryAgain\n');
+      mm.loadFrameScript(script2, /* allowDelayedLoad = */ false);
+    });
+  }
+
+  mm.addMessageListener('test-try-again', onTryAgain);
+  numPendingChildTests++;
+
+  onTryAgain();
+  waitForPendingTests(function() {
+    mm.removeMessageListener('test-try-again', onTryAgain);
+    test6g();
+  });
+}
+
+function test6g() {
+  var e = promptBlockers.pop();
+  // Now unblock the iframe and check that the script completed.
+  e.detail.unblock();
+
+  var script2 = 'data:,\
+    if (this.testState === 3) { \
+      sendAsyncMessage("test-success", "4: Correct testState"); \
+    } \
+    else { \
+      sendAsyncMessage("test-try-again", "4: Wrong testState (for now): " + this.testState); \
+    }';
+
+  // Urgh.  e.unblock() didn't necessarily unblock us immediately, so we have
+  // to spin and wait.
+  function onTryAgain() {
+    SimpleTest.executeSoon(function() {
+      //dump('onTryAgain\n');
+      mm.loadFrameScript(script2, /* allowDelayedLoad = */ false);
+    });
+  }
+
+  mm.addMessageListener('test-try-again', onTryAgain);
+  numPendingChildTests++;
+
+  onTryAgain();
+  waitForPendingTests(function() {
+    mm.removeMessageListener('test-try-again', onTryAgain);
+    test6h();
+  });
+}
+
+function test6h() {
+  SimpleTest.finish();
+}
+
+var prevNumPendingTests = null;
+function waitForPendingTests(next) {
+  if (numPendingChildTests !== prevNumPendingTests) {
+    dump("Waiting for end; " + numPendingChildTests + " pending tests\n");
+    prevNumPendingTests = numPendingChildTests;
+  }
+
+  if (numPendingChildTests > 0) {
+    SimpleTest.executeSoon(function() { waitForPendingTests(next); });
+    return;
+  }
+
+  prevNumPendingTests = null;
+  next();
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_AlertInFrame.js b/dom/browser-element/mochitest/browserElement_AlertInFrame.js
new file mode 100644
index 0000000000..e9b6061549
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_AlertInFrame.js
@@ -0,0 +1,24 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that alert works from inside an <iframe> inside an <iframe mozbrowser>.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    is(e.detail.message, 'Hello');
+    SimpleTest.finish();
+  });
+
+  iframe.src = 'file_browserElement_AlertInFrame.html';
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_AudioChannel.js b/dom/browser-element/mochitest/browserElement_AudioChannel.js
new file mode 100644
index 0000000000..20f7b4e47d
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_AudioChannel.js
@@ -0,0 +1,199 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 1113086 - tests for AudioChannel API into BrowserElement
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function noaudio() {
+  info("Test : no-audio");
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  iframe.src = 'chrome://mochitests/content/chrome/dom/browser-element/mochitest/file_empty.html';
+
+  function noaudio_loadend() {
+    ok("mute" in iframe, "iframe.mute exists");
+    ok("unmute" in iframe, "iframe.unmute exists");
+    ok("getMuted" in iframe, "iframe.getMuted exists");
+    ok("getVolume" in iframe, "iframe.getVolume exists");
+    ok("setVolume" in iframe, "iframe.setVolume exists");
+
+    ok("allowedAudioChannels" in iframe, "allowedAudioChannels exist");
+    var channels = iframe.allowedAudioChannels;
+    is(channels.length, 9, "9 audio channel by default");
+
+    var ac = channels[0];
+
+    ok(ac instanceof BrowserElementAudioChannel, "Correct class");
+    ok("getVolume" in ac, "ac.getVolume exists");
+    ok("setVolume" in ac, "ac.setVolume exists");
+    ok("getMuted" in ac, "ac.getMuted exists");
+    ok("setMuted" in ac, "ac.setMuted exists");
+    ok("isActive" in ac, "ac.isActive exists");
+
+    new Promise(function(r, rr) {
+      var req = ac.getVolume();
+      ok(req instanceof DOMRequest, "This is a domRequest.");
+      req.onsuccess = function(e) {
+        is(e.target.result, 1.0, "The default volume should be 1.0");
+        r();
+      }
+    })
+
+    .then(function() {
+      return new Promise(function(resolve) {
+        iframe.mute();
+        iframe.getMuted()
+          .then(result => is(result, true, "iframe.getMuted should be true."))
+          .then(resolve);
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(resolve) {
+        iframe.unmute();
+        iframe.getMuted()
+          .then(result => is(result, false, "iframe.getMuted should be false."))
+          .then(resolve);
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(resolve) {
+        iframe.setVolume(0);
+        iframe.getVolume()
+          .then(result => is(result, 0, "iframe.getVolume should be 0."))
+          .then(resolve);
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(resolve) {
+        iframe.setVolume(1);
+        iframe.getVolume()
+          .then(result => is(result, 1, "iframe.getVolume should be 1."))
+          .then(resolve);
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(r, rr) {
+        ac.getMuted().onsuccess = function(e) {
+          is(e.target.result, false, "The default muted value should be false");
+          r();
+        }
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(r, rr) {
+        ac.setVolume(0.8).onsuccess = function() { r(); }
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(r, rr) {
+        ac.getVolume().onsuccess = function(e) {
+          // the actual value is 0.800000011920929..
+          ok(Math.abs(0.8 - e.target.result) < 0.01, "The new volume should be 0.8: " + e.target.result);
+          r();
+        }
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(r, rr) {
+        ac.setVolume(1.0).onsuccess = function() { r(); }
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(r, rr) {
+        ac.setMuted(true).onsuccess = function() { r(); }
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(r, rr) {
+        ac.getMuted().onsuccess = function(e) {
+          is(e.target.result, true, "The new muted value should be true");
+          r();
+        }
+      });
+    })
+
+    .then(function() {
+      return new Promise(function(r, rr) {
+        ac.isActive().onsuccess = function(e) {
+          is(e.target.result, false, "ac.isActive is false: no audio element active.");
+          r();
+        }
+      });
+    })
+
+    .then(runTests);
+  }
+
+  iframe.addEventListener('mozbrowserloadend', noaudio_loadend);
+  document.body.appendChild(iframe);
+}
+
+function audio() {
+  info("Test : audio");
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  iframe.src = 'chrome://mochitests/content/chrome/dom/browser-element/mochitest/iframe_file_audio.html';
+
+  function audio_loadend() {
+    ok("mute" in iframe, "iframe.mute exists");
+    ok("unmute" in iframe, "iframe.unmute exists");
+    ok("getMuted" in iframe, "iframe.getMuted exists");
+    ok("getVolume" in iframe, "iframe.getVolume exists");
+    ok("setVolume" in iframe, "iframe.setVolume exists");
+
+    ok("allowedAudioChannels" in iframe, "allowedAudioChannels exist");
+    var channels = iframe.allowedAudioChannels;
+    is(channels.length, 9, "9 audio channel by default");
+
+    var ac = channels[0];
+
+    ok(ac instanceof BrowserElementAudioChannel, "Correct class");
+    ok("getVolume" in ac, "ac.getVolume exists");
+    ok("setVolume" in ac, "ac.setVolume exists");
+    ok("getMuted" in ac, "ac.getMuted exists");
+    ok("setMuted" in ac, "ac.setMuted exists");
+    ok("isActive" in ac, "ac.isActive exists");
+
+    ac.onactivestatechanged = function() {
+      ok(true, "activestatechanged event received.");
+      ac.onactivestatechanged = null;
+      document.body.removeChild(iframe);
+      runTests();
+    }
+  }
+
+  iframe.addEventListener('mozbrowserloadend', audio_loadend);
+  document.body.appendChild(iframe);
+}
+
+var tests = [ noaudio, audio ];
+
+function runTests() {
+  if (tests.length == 0) {
+    SimpleTest.finish();
+    return;
+  }
+
+  var test = tests.shift();
+  test();
+}
+
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set': [["b2g.system_startup_url", window.location.href]]},
+                            function() {
+    SimpleTest.executeSoon(runTests);
+  });
+});
diff --git a/dom/browser-element/mochitest/browserElement_AudioChannelMutedByDefault.js b/dom/browser-element/mochitest/browserElement_AudioChannelMutedByDefault.js
new file mode 100644
index 0000000000..897c4318ae
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_AudioChannelMutedByDefault.js
@@ -0,0 +1,103 @@
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var fileURL = 'chrome://mochitests/content/chrome/dom/browser-element/mochitest/file_browserElement_AudioChannelMutedByDefault.html';
+var testFrame;
+var ac;
+
+function alertListener(e) {
+  var message = e.detail.message
+  if (/^OK/.exec(message)) {
+    ok(true, "Message from file : " + message);
+  } else if (/^KO/.exec(message)) {
+    error(message);
+  } else if (/DONE/.exec(message)) {
+    ok(true, "Audio playback success!");
+    finish();
+  } else {
+    error("Undefined event.");
+  }
+}
+
+function assert(aVal, aMessage) {
+  return (!aVal) ? error(aMessage) : 0;
+}
+
+function error(aMessage) {
+  ok(false, "Error : " + aMessage);
+  finish();
+}
+
+function finish() {
+  testFrame.removeEventListener('mozbrowsershowmodalprompt', alertListener);
+  document.body.removeChild(testFrame);
+  SimpleTest.finish();
+}
+
+function setCommand(aArg) {
+  assert(!!ac, "Audio channel doesn't exist!");
+  info("# Command = " + aArg);
+  testFrame.src = fileURL + '#' + aArg;
+
+  switch (aArg) {
+    case 'play':
+      ac.onactivestatechanged = () => {
+        ac.onactivestatechanged = null;
+        ok(true, "activestatechanged event received.");
+
+        new Promise(function(r, rr) {
+          ac.getMuted().onsuccess = function(e) {
+            is(e.target.result, true, "Muted channel by default");
+            r();
+          }
+        }).then(function() {
+          ac.setMuted(false).onsuccess = function(e) {
+            ok(true, "Unmuted the channel.");
+          }
+        });
+      };
+      break;
+    default :
+      error("Undefined command!");
+  }
+}
+
+function runTests() {
+  setCommand('play');
+}
+
+function setupTestFrame() {
+  testFrame = document.createElement('iframe');
+  testFrame.setAttribute('mozbrowser', 'true');
+  testFrame.src = fileURL;
+
+  function loadend() {
+    testFrame.removeEventListener('mozbrowserloadend', loadend);
+    ok("allowedAudioChannels" in testFrame, "allowedAudioChannels exist");
+    var channels = testFrame.allowedAudioChannels;
+    is(channels.length, 9, "9 audio channel by default");
+
+    ac = channels[0];
+    ok(ac instanceof BrowserElementAudioChannel, "Correct class");
+    ok("getMuted" in ac, "ac.getMuted exists");
+    ok("setMuted" in ac, "ac.setMuted exists");
+    ok("onactivestatechanged" in ac, "onactivestatechanged exists");
+
+    runTests();
+  }
+
+  info("Set EventListeners.");
+  testFrame.addEventListener('mozbrowsershowmodalprompt', alertListener);
+  testFrame.addEventListener('mozbrowserloadend', loadend);
+  document.body.appendChild(testFrame);
+}
+
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set': [["b2g.system_startup_url", window.location.href],
+                                     ["dom.audiochannel.mutedByDefault", true]]},
+                            function() {
+    SimpleTest.executeSoon(setupTestFrame);
+  });
+});
diff --git a/dom/browser-element/mochitest/browserElement_AudioChannelSeeking.js b/dom/browser-element/mochitest/browserElement_AudioChannelSeeking.js
new file mode 100644
index 0000000000..f354a9d82e
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_AudioChannelSeeking.js
@@ -0,0 +1,128 @@
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var fileURL = 'chrome://mochitests/content/chrome/dom/browser-element/mochitest/file_browserElement_AudioChannelSeeking.html';
+var generator = runTests();
+var testFrame;
+var ac;
+
+function alertListener(e) {
+  var message = e.detail.message
+  if (/^OK/.exec(message)) {
+    ok(true, "Message from file : " + message);
+    continueTest();
+  } else if (/^KO/.exec(message)) {
+    error(message);
+  } else if (/^INFO/.exec(message)) {
+    info("Message from file : " + message);
+  } else {
+    error("Undefined event.");
+  }
+}
+
+function assert(aVal, aMessage) {
+  return (!aVal) ? error(aMessage) : 0;
+}
+
+function error(aMessage) {
+  ok(false, "Error : " + aMessage);
+  finish();
+}
+
+function continueTest() {
+  try {
+    generator.next();
+  } catch (e if e instanceof StopIteration) {
+    error("Stop test because of exception!");
+  }
+}
+
+function finish() {
+  testFrame.removeEventListener('mozbrowsershowmodalprompt', alertListener);
+  ok(true, "Remove event-listener.");
+  document.body.removeChild(testFrame);
+  ok(true, "Remove test-frame from document.");
+  SimpleTest.finish();
+}
+
+function setCommand(aArg) {
+  assert(!!ac, "Audio channel doesn't exist!");
+  info("# Command = " + aArg);
+  testFrame.src = fileURL + '#' + aArg;
+
+  switch (aArg) {
+    case 'play':
+      ac.onactivestatechanged = () => {
+        ac.onactivestatechanged = null;
+        ok(true, "Receive onactivestatechanged after audio started.");
+        continueTest();
+      };
+      break;
+    case 'seeking':
+      ac.onactivestatechanged = () => {
+        ac.onactivestatechanged = null;
+        error("Should not receive onactivestatechanged during seeking!");
+      };
+      break;
+    case 'pause':
+      ac.onactivestatechanged = null;
+      break;
+    default :
+      error("Undefined command!");
+  }
+}
+
+function runTests() {
+  setCommand('play');
+  yield undefined;
+
+  setCommand('seeking');
+  yield undefined;
+
+  setCommand('seeking');
+  yield undefined;
+
+  setCommand('seeking');
+  yield undefined;
+
+  setCommand('pause');
+  yield undefined;
+
+  finish();
+  yield undefined;
+}
+
+function setupTestFrame() {
+  testFrame = document.createElement('iframe');
+  testFrame.setAttribute('mozbrowser', 'true');
+  testFrame.src = fileURL;
+
+  function loadend() {
+    testFrame.removeEventListener('mozbrowserloadend', loadend);
+    ok("allowedAudioChannels" in testFrame, "allowedAudioChannels exist");
+    var channels = testFrame.allowedAudioChannels;
+    is(channels.length, 9, "9 audio channel by default");
+
+    ac = channels[0];
+    ok(ac instanceof BrowserElementAudioChannel, "Correct class");
+    ok("onactivestatechanged" in ac, "onactivestatechanged exists");
+
+    continueTest();
+  }
+
+  testFrame.addEventListener('mozbrowsershowmodalprompt', alertListener);
+  testFrame.addEventListener('mozbrowserloadend', loadend);
+  ok(true, "Add event-listeners.");
+
+  document.body.appendChild(testFrame);
+  ok(true, "Append test-frame to document.");
+}
+
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set': [["b2g.system_startup_url", window.location.href]]},
+                            function() {
+    SimpleTest.executeSoon(setupTestFrame);
+  });
+});
diff --git a/dom/browser-element/mochitest/browserElement_AudioChannel_nested.js b/dom/browser-element/mochitest/browserElement_AudioChannel_nested.js
new file mode 100644
index 0000000000..2ed432b2aa
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_AudioChannel_nested.js
@@ -0,0 +1,69 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 1113086 - tests for AudioChannel API into BrowserElement
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTests() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  var listener = function(e) {
+    var message = e.detail.message;
+    if (/^OK/.exec(message)) {
+      ok(true, "Message from app: " + message);
+    } else if (/^KO/.exec(message)) {
+      ok(false, "Message from app: " + message);
+    } else if (/DONE/.exec(message)) {
+      ok(true, "Messaging from app complete");
+      iframe.removeEventListener('mozbrowsershowmodalprompt', listener);
+      SimpleTest.finish();
+    }
+  }
+
+  function audio_loadend() {
+    ok("mute" in iframe, "iframe.mute exists");
+    ok("unmute" in iframe, "iframe.unmute exists");
+    ok("getMuted" in iframe, "iframe.getMuted exists");
+    ok("getVolume" in iframe, "iframe.getVolume exists");
+    ok("setVolume" in iframe, "iframe.setVolume exists");
+
+    ok("allowedAudioChannels" in iframe, "allowedAudioChannels exist");
+    var channels = iframe.allowedAudioChannels;
+    is(channels.length, 9, "9 audio channel by default");
+
+    var ac = channels[0];
+
+    ok(ac instanceof BrowserElementAudioChannel, "Correct class");
+    ok("getVolume" in ac, "ac.getVolume exists");
+    ok("setVolume" in ac, "ac.setVolume exists");
+    ok("getMuted" in ac, "ac.getMuted exists");
+    ok("setMuted" in ac, "ac.setMuted exists");
+    ok("isActive" in ac, "ac.isActive exists");
+
+    info("Setting the volume...");
+    ac.setVolume(0.5);
+
+    ac.onactivestatechanged = function() {
+      ok(true, "activestatechanged event received.");
+      ac.onactivestatechanged = null;
+    }
+  }
+
+  iframe.addEventListener('mozbrowserloadend', audio_loadend);
+  iframe.addEventListener('mozbrowsershowmodalprompt', listener, false);
+  document.body.appendChild(iframe);
+
+  iframe.src = 'chrome://mochitests/content/chrome/dom/browser-element/mochitest/file_browserElement_AudioChannel_nested.html';
+}
+
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set': [["b2g.system_startup_url", window.location.href]]},
+                            function() {
+    SimpleTest.executeSoon(runTests);
+  });
+});
diff --git a/dom/browser-element/mochitest/browserElement_AudioPlayback.js b/dom/browser-element/mochitest/browserElement_AudioPlayback.js
new file mode 100644
index 0000000000..bcbe89cb10
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_AudioPlayback.js
@@ -0,0 +1,75 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test the mozbrowseraudioplaybackchange event is fired correctly.
+'use strict';
+
+const { Services } = SpecialPowers.Cu.import('resource://gre/modules/Services.jsm');
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+/**
+ * Content script passed to the child iframe
+ */
+function playAudioScript() {
+  var audio = new content.Audio();
+  content.document.body.appendChild(audio);
+  audio.oncanplay = function() {
+    audio.play();
+  };
+  audio.src = 'audio.ogg';
+}
+
+/**
+ * Creates a simple mozbrowser frame
+ */
+function createFrame() {
+  let iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+  return iframe;
+}
+
+function runTest() {
+  SimpleTest.waitForExplicitFinish();
+
+  let iframe = createFrame();
+  let iframe2 = createFrame();
+
+  // When the first iframe is finished loading inject a script to create
+  // an audio element and play it.
+  iframe.addEventListener('mozbrowserloadend', () => {
+    let mm = SpecialPowers.getBrowserFrameMessageManager(iframe);
+    mm.loadFrameScript('data:,(' + playAudioScript.toString() + ')();', false);
+  });
+
+  // Two events should come in, when the audio starts, and stops playing.
+  // The first one should have a detail of 'active' and the second one
+  // should have a detail of 'inactive-pause'.
+  let expectedNextData = 'active';
+  iframe.addEventListener('mozbrowseraudioplaybackchange', (e) => {
+    is(e.detail, expectedNextData, 'Audio detail should be correct')
+    is(e.target, iframe, 'event target should be the first iframe')
+    if (e.detail === 'inactive-pause') {
+      SimpleTest.finish();
+    }
+    expectedNextData = 'inactive-pause';
+  });
+
+  // Make sure an event only goes to the first iframe.
+  iframe2.addEventListener('mozbrowseraudioplaybackchange', (e) => {
+    ok(false,
+       'mozbrowseraudioplaybackchange should dispatch to the correct browser');
+  });
+
+  // Load a simple page to get the process started.
+  iframe.src = browserElementTestHelpers.fileEmptyPage1;
+}
+
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set': [["b2g.system_startup_url", window.location.href]]},
+                            function() {
+    SimpleTest.executeSoon(runTest);
+  });
+});
diff --git a/dom/browser-element/mochitest/browserElement_Auth.js b/dom/browser-element/mochitest/browserElement_Auth.js
new file mode 100644
index 0000000000..ef95409be4
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Auth.js
@@ -0,0 +1,246 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that auth prompt works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+const { NetUtil } = SpecialPowers.Cu.import('resource://gre/modules/NetUtil.jsm');
+
+function testFail(msg) {
+  ok(false, JSON.stringify(msg));
+}
+
+var iframe;
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  // Wait for the initial load to finish, then navigate the page, then start test
+  // by loading SJS with http 401 response.
+  iframe.addEventListener('mozbrowserloadend', function loadend() {
+    iframe.removeEventListener('mozbrowserloadend', loadend);
+    iframe.addEventListener('mozbrowserusernameandpasswordrequired', testHttpAuthCancel);
+    SimpleTest.executeSoon(function() {
+      // Use absolute path because we need to specify host.
+      iframe.src = 'http://test/tests/dom/browser-element/mochitest/file_http_401_response.sjs';
+    });
+  });
+}
+
+function testHttpAuthCancel(e) {
+  iframe.removeEventListener("mozbrowserusernameandpasswordrequired", testHttpAuthCancel);
+  // Will cancel authentication, but prompt should not be shown again. Instead,
+  // we will be led to fail message
+  iframe.addEventListener("mozbrowserusernameandpasswordrequired", testFail);
+  iframe.addEventListener("mozbrowsertitlechange", function onTitleChange(e) {
+    iframe.removeEventListener("mozbrowsertitlechange", onTitleChange);
+    iframe.removeEventListener("mozbrowserusernameandpasswordrequired", testFail);
+    is(e.detail, 'http auth failed', 'expected authentication to fail');
+    iframe.addEventListener('mozbrowserusernameandpasswordrequired', testHttpAuth);
+    SimpleTest.executeSoon(function() {
+      // Use absolute path because we need to specify host.
+      iframe.src = 'http://test/tests/dom/browser-element/mochitest/file_http_401_response.sjs';
+    });
+  });
+
+  is(e.detail.realm, 'http_realm', 'expected realm matches');
+  is(e.detail.host, 'http://test', 'expected host matches');
+  is(e.detail.path,
+     '/tests/dom/browser-element/mochitest/file_http_401_response.sjs',
+     'expected path matches');
+  e.preventDefault();
+
+  SimpleTest.executeSoon(function() {
+    e.detail.cancel();
+  });
+}
+
+function testHttpAuth(e) {
+  iframe.removeEventListener("mozbrowserusernameandpasswordrequired", testHttpAuth);
+
+  // Will authenticate with correct password, prompt should not be
+  // called again.
+  iframe.addEventListener("mozbrowserusernameandpasswordrequired", testFail);
+  iframe.addEventListener("mozbrowsertitlechange", function onTitleChange(e) {
+    iframe.removeEventListener("mozbrowsertitlechange", onTitleChange);
+    iframe.removeEventListener("mozbrowserusernameandpasswordrequired", testFail);
+    is(e.detail, 'http auth success', 'expect authentication to succeed');
+    SimpleTest.executeSoon(testProxyAuth);
+  });
+
+  is(e.detail.realm, 'http_realm', 'expected realm matches');
+  is(e.detail.host, 'http://test', 'expected host matches');
+  is(e.detail.path,
+     '/tests/dom/browser-element/mochitest/file_http_401_response.sjs',
+     'expected path matches');
+  is(e.detail.isProxy, false, 'expected isProxy is false');
+  e.preventDefault();
+
+  SimpleTest.executeSoon(function() {
+    e.detail.authenticate("httpuser", "httppass");
+  });
+}
+
+function testProxyAuth(e) {
+  // The testingSJS simulates the 407 proxy authentication required response
+  // for proxy server, which will trigger the browser element to send prompt
+  // event with proxy infomation.
+  var testingSJS = 'http://test/tests/dom/browser-element/mochitest/file_http_407_response.sjs';
+  var mozproxy;
+
+  function onUserNameAndPasswordRequired(e) {
+    iframe.removeEventListener("mozbrowserusernameandpasswordrequired",
+                               onUserNameAndPasswordRequired);
+    iframe.addEventListener("mozbrowsertitlechange", function onTitleChange(e) {
+      iframe.removeEventListener("mozbrowsertitlechange", onTitleChange);
+      iframe.removeEventListener("mozbrowserusernameandpasswordrequired", testFail);
+      is(e.detail, 'http auth success', 'expect authentication to succeed');
+      SimpleTest.executeSoon(testAuthJarNoInterfere);
+    });
+
+    is(e.detail.realm, 'http_realm', 'expected realm matches');
+    is(e.detail.host, mozproxy, 'expected host matches');
+    is(e.detail.path,
+       '/tests/dom/browser-element/mochitest/file_http_407_response.sjs',
+       'expected path matches');
+    is(e.detail.isProxy, true, 'expected isProxy is true');
+    e.preventDefault();
+
+    SimpleTest.executeSoon(function() {
+      e.detail.authenticate("proxyuser", "proxypass");
+    });
+  }
+
+  // Resolve proxy information used by the test suite, we need it to validate
+  // whether the proxy information delivered with the prompt event is correct.
+  var resolveCallback = SpecialPowers.wrapCallbackObject({
+    QueryInterface: function (iid) {
+      const interfaces = [Ci.nsIProtocolProxyCallback, Ci.nsISupports];
+
+      if (!interfaces.some( function(v) { return iid.equals(v) } )) {
+        throw SpecialPowers.Cr.NS_ERROR_NO_INTERFACE;
+      }
+      return this;
+    },
+
+    onProxyAvailable: function (req, channel, pi, status) {
+      isnot(pi, null, 'expected proxy information available');
+      if (pi) {
+        mozproxy = "moz-proxy://" + pi.host + ":" + pi.port;
+      }
+      iframe.addEventListener("mozbrowserusernameandpasswordrequired",
+                              onUserNameAndPasswordRequired);
+
+      iframe.src = testingSJS;
+    }
+  });
+
+  var channel = NetUtil.newChannel({
+    uri: testingSJS,
+    loadUsingSystemPrincipal: true
+  });
+
+  var pps = SpecialPowers.Cc["@mozilla.org/network/protocol-proxy-service;1"]
+            .getService();
+
+  pps.asyncResolve(channel, 0, resolveCallback);
+}
+
+function testAuthJarNoInterfere(e) {
+  var authMgr = SpecialPowers.Cc['@mozilla.org/network/http-auth-manager;1']
+    .getService(SpecialPowers.Ci.nsIHttpAuthManager);
+  var secMan = SpecialPowers.Cc["@mozilla.org/scriptsecuritymanager;1"]
+               .getService(SpecialPowers.Ci.nsIScriptSecurityManager);
+  var ioService = SpecialPowers.Cc["@mozilla.org/network/io-service;1"]
+                  .getService(SpecialPowers.Ci.nsIIOService);
+  var uri = ioService.newURI("http://test/tests/dom/browser-element/mochitest/file_http_401_response.sjs", null, null);
+
+  // Set a bunch of auth data that should not conflict with the correct auth data already
+  // stored in the cache.
+  var attrs = {appId: 1};
+  var principal = secMan.createCodebasePrincipal(uri, attrs);
+  authMgr.setAuthIdentity('http', 'test', -1, 'basic', 'http_realm',
+                          'tests/dom/browser-element/mochitest/file_http_401_response.sjs',
+                          '', 'httpuser', 'wrongpass', false, principal);
+  attrs = {appId: 1, inIsolatedMozBrowser: true};
+  principal = secMan.createCodebasePrincipal(uri, attrs);
+  authMgr.setAuthIdentity('http', 'test', -1, 'basic', 'http_realm',
+                          'tests/dom/browser-element/mochitest/file_http_401_response.sjs',
+                          '', 'httpuser', 'wrongpass', false, principal);
+  principal = secMan.createCodebasePrincipal(uri, {});
+  authMgr.setAuthIdentity('http', 'test', -1, 'basic', 'http_realm',
+                          'tests/dom/browser-element/mochitest/file_http_401_response.sjs',
+                          '', 'httpuser', 'wrongpass', false, principal);
+
+  // Will authenticate with correct password, prompt should not be
+  // called again.
+  iframe.addEventListener("mozbrowserusernameandpasswordrequired", testFail);
+  iframe.addEventListener("mozbrowsertitlechange", function onTitleChange(e) {
+    iframe.removeEventListener("mozbrowsertitlechange", onTitleChange);
+    iframe.removeEventListener("mozbrowserusernameandpasswordrequired", testFail);
+    is(e.detail, 'http auth success', 'expected authentication success');
+    SimpleTest.executeSoon(testAuthJarInterfere);
+  });
+
+  // Once more with feeling. Ensure that our new auth data doesn't interfere with this mozbrowser's
+  // auth data.
+  iframe.src = 'http://test/tests/dom/browser-element/mochitest/file_http_401_response.sjs';
+}
+
+function testAuthJarInterfere(e) {
+  var authMgr = SpecialPowers.Cc['@mozilla.org/network/http-auth-manager;1']
+    .getService(SpecialPowers.Ci.nsIHttpAuthManager);
+  var secMan = SpecialPowers.Cc["@mozilla.org/scriptsecuritymanager;1"]
+               .getService(SpecialPowers.Ci.nsIScriptSecurityManager);
+  var ioService = SpecialPowers.Cc["@mozilla.org/network/io-service;1"]
+                  .getService(SpecialPowers.Ci.nsIIOService);
+  var uri = ioService.newURI("http://test/tests/dom/browser-element/mochitest/file_http_401_response.sjs", null, null);
+
+  // Set some auth data that should overwrite the successful stored details.
+  var principal = secMan.createCodebasePrincipal(uri, {inIsolatedMozBrowser: true});
+  authMgr.setAuthIdentity('http', 'test', -1, 'basic', 'http_realm',
+                          'tests/dom/browser-element/mochitest/file_http_401_response.sjs',
+                          '', 'httpuser', 'wrongpass', false, principal);
+
+  // Will authenticate with correct password, prompt should not be
+  // called again.
+  var gotusernamepasswordrequired = false;
+  function onUserNameAndPasswordRequired() {
+      gotusernamepasswordrequired = true;
+  }
+  iframe.addEventListener("mozbrowserusernameandpasswordrequired",
+                          onUserNameAndPasswordRequired);
+  iframe.addEventListener("mozbrowsertitlechange", function onTitleChange(e) {
+    iframe.removeEventListener("mozbrowsertitlechange", onTitleChange);
+    iframe.removeEventListener("mozbrowserusernameandpasswordrequired",
+                               onUserNameAndPasswordRequired);
+    ok(gotusernamepasswordrequired,
+       "Should have dispatched mozbrowserusernameandpasswordrequired event");
+    testFinish();
+  });
+
+  // Once more with feeling. Ensure that our new auth data interferes with this mozbrowser's
+  // auth data.
+  iframe.src = 'http://test/tests/dom/browser-element/mochitest/file_http_401_response.sjs';
+}
+
+function testFinish() {
+  // Clear login information stored in password manager.
+  var authMgr = SpecialPowers.Cc['@mozilla.org/network/http-auth-manager;1']
+    .getService(SpecialPowers.Ci.nsIHttpAuthManager);
+  authMgr.clearAll();
+
+  var pwmgr = SpecialPowers.Cc["@mozilla.org/login-manager;1"]
+    .getService(SpecialPowers.Ci.nsILoginManager);
+  pwmgr.removeAllLogins();
+
+  SimpleTest.finish();
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_BackForward.js b/dom/browser-element/mochitest/browserElement_BackForward.js
new file mode 100644
index 0000000000..26b6344c46
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_BackForward.js
@@ -0,0 +1,104 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 741755 - Test that canGo{Back,Forward} and go{Forward,Back} work with
+// <iframe mozbrowser>.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframe;
+function addOneShotIframeEventListener(event, fn) {
+  function wrapper(e) {
+    iframe.removeEventListener(event, wrapper);
+    fn(e);
+  };
+
+  iframe.addEventListener(event, wrapper);
+}
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  addOneShotIframeEventListener('mozbrowserloadend', function() {
+    SimpleTest.executeSoon(test2);
+  });
+
+  iframe.src = browserElementTestHelpers.emptyPage1;
+  document.body.appendChild(iframe);
+}
+
+function checkCanGoBackAndForward(canGoBack, canGoForward, nextTest) {
+  var seenCanGoBackResult = false;
+  iframe.getCanGoBack().onsuccess = function(e) {
+    is(seenCanGoBackResult, false, "onsuccess handler shouldn't be called twice.");
+    seenCanGoBackResult = true;
+    is(e.target.result, canGoBack);
+    maybeRunNextTest();
+  };
+
+  var seenCanGoForwardResult = false;
+  iframe.getCanGoForward().onsuccess = function(e) {
+    is(seenCanGoForwardResult, false, "onsuccess handler shouldn't be called twice.");
+    seenCanGoForwardResult = true;
+    is(e.target.result, canGoForward);
+    maybeRunNextTest();
+  };
+
+  function maybeRunNextTest() {
+    if (seenCanGoBackResult && seenCanGoForwardResult) {
+      nextTest();
+    }
+  }
+}
+
+function test2() {
+  checkCanGoBackAndForward(false, false, test3);
+}
+
+function test3() {
+  addOneShotIframeEventListener('mozbrowserloadend', function() {
+    checkCanGoBackAndForward(true, false, test4);
+  });
+
+  SimpleTest.executeSoon(function() {
+    iframe.src = browserElementTestHelpers.emptyPage2;
+  });
+}
+
+function test4() {
+  addOneShotIframeEventListener('mozbrowserlocationchange', function(e) {
+    is(e.detail.url, browserElementTestHelpers.emptyPage3);
+    is(e.detail.canGoBack, true);
+    is(e.detail.canGoForward, false);
+    checkCanGoBackAndForward(true, false, test5);
+  });
+
+  SimpleTest.executeSoon(function() {
+    iframe.src = browserElementTestHelpers.emptyPage3;
+  });
+}
+
+function test5() {
+  addOneShotIframeEventListener('mozbrowserlocationchange', function(e) {
+    is(e.detail.url, browserElementTestHelpers.emptyPage2);
+    is(e.detail.canGoBack, true);
+    is(e.detail.canGoForward, true);
+    checkCanGoBackAndForward(true, true, test6);
+  });
+  iframe.goBack();
+}
+
+function test6() {
+  addOneShotIframeEventListener('mozbrowserlocationchange', function(e) {
+    is(e.detail.url, browserElementTestHelpers.emptyPage1);
+    is(e.detail.canGoBack, false);
+    is(e.detail.canGoForward, true);
+    checkCanGoBackAndForward(false, true, SimpleTest.finish);
+  });
+  iframe.goBack();
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_BadScreenshot.js b/dom/browser-element/mochitest/browserElement_BadScreenshot.js
new file mode 100644
index 0000000000..7b194da868
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_BadScreenshot.js
@@ -0,0 +1,71 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 800170 - Test that we get errors when we pass bad arguments to
+// mozbrowser's getScreenshot.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframe;
+var numPendingTests = 0;
+
+// Call iframe.getScreenshot with the given args.  If expectSuccess is true, we
+// expect the screenshot's onsuccess handler to fire.  Otherwise, we expect
+// getScreenshot() to throw an exception.
+function checkScreenshotResult(expectSuccess, args) {
+  var req;
+  try {
+    req = iframe.getScreenshot.apply(iframe, args);
+  }
+  catch(e) {
+    ok(!expectSuccess, "getScreenshot(" + JSON.stringify(args) + ") threw an exception.");
+    return;
+  }
+
+  numPendingTests++;
+  req.onsuccess = function() {
+    ok(expectSuccess, "getScreenshot(" + JSON.stringify(args) + ") succeeded.");
+    numPendingTests--;
+    if (numPendingTests == 0) {
+      SimpleTest.finish();
+    }
+  };
+
+  // We never expect to see onerror.
+  req.onerror = function() {
+    ok(false, "getScreenshot(" + JSON.stringify(args) + ") ran onerror.");
+    numPendingTests--;
+    if (numPendingTests == 0) {
+      SimpleTest.finish();
+    }
+  };
+}
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+  iframe.src = 'data:text/html,<html>' +
+    '<body style="background:green">hello</body></html>';
+
+  iframe.addEventListener('mozbrowserfirstpaint', function() {
+    // This one should succeed.
+    checkScreenshotResult(true, [100, 100]);
+
+    // These should fail.
+    checkScreenshotResult(false, []);
+    checkScreenshotResult(false, [100]);
+    checkScreenshotResult(false, ['a', 100]);
+    checkScreenshotResult(false, [100, 'a']);
+    checkScreenshotResult(false, [-1, 100]);
+    checkScreenshotResult(false, [100, -1]);
+
+    if (numPendingTests == 0) {
+      SimpleTest.finish();
+    }
+  });
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_BrowserWindowNamespace.js b/dom/browser-element/mochitest/browserElement_BrowserWindowNamespace.js
new file mode 100644
index 0000000000..87c4a216c4
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_BrowserWindowNamespace.js
@@ -0,0 +1,57 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 780351 - Test that mozbrowser does /not/ divide the window name namespace.
+// Multiple mozbrowsers inside the same app are like multiple browser tabs;
+// they share a window name namespace.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+
+  // Two mozbrowser frames with the same code both do the same
+  // window.open("foo", "bar") call.  We should only get one
+  // mozbrowseropenwindow event.
+
+  iframe1.addEventListener('mozbrowseropenwindow', function(e) {
+    ok(true, "Got first mozbrowseropenwindow event.");
+    document.body.appendChild(e.detail.frameElement);
+
+    e.detail.frameElement.addEventListener('mozbrowserlocationchange', function(e) {
+      if (e.detail.url == "http://example.com/#2") {
+        ok(true, "Got locationchange to http://example.com/#2");
+        SimpleTest.finish();
+      }
+      else {
+        ok(true, "Got locationchange to " + e.detail.url);
+      }
+    });
+
+    SimpleTest.executeSoon(function() {
+      var iframe2 = document.createElement('iframe');
+      // Make sure that iframe1 and iframe2 are in the same TabGroup by linking
+      // them through opener. Right now this API requires chrome privileges, as
+      // it is on MozFrameLoaderOwner.
+      SpecialPowers.wrap(iframe2).presetOpenerWindow(iframe1.contentWindow);
+      iframe2.setAttribute('mozbrowser', 'true');
+
+      iframe2.addEventListener('mozbrowseropenwindow', function(e) {
+        ok(false, "Got second mozbrowseropenwindow event.");
+      });
+
+      document.body.appendChild(iframe2);
+      iframe2.src = 'file_browserElement_BrowserWindowNamespace.html#2';
+    });
+  });
+
+  document.body.appendChild(iframe1);
+  iframe1.src = 'file_browserElement_BrowserWindowNamespace.html#1';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_BrowserWindowResize.js b/dom/browser-element/mochitest/browserElement_BrowserWindowResize.js
new file mode 100644
index 0000000000..420b4bc34e
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_BrowserWindowResize.js
@@ -0,0 +1,51 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 891763 - Test the mozbrowserresize event
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var srcResizeTo = "data:text/html,       \
+    <script type='application/javascript'> \
+      window.resizeTo(300, 300);           \
+    <\/script>                             \
+  ";
+
+  var srcResizeBy = "data:text/html,       \
+    <script type='application/javascript'> \
+      window.resizeBy(-100, -100);         \
+    <\/script>                             \
+  ";
+
+  var count = 0;
+  function checkSize(iframe) {
+    count++;
+    is(iframe.clientWidth,  400, "iframe width does not change");
+    is(iframe.clientHeight, 400, "iframe height does not change");
+    if (count == 2) {
+      SimpleTest.finish();
+    }
+  }
+
+  function testIFrameWithSrc(src) {
+    var iframe = document.createElement('iframe');
+    iframe.setAttribute('mozbrowser', 'true');
+    iframe.style = "border:none; width:400px; height:400px;";
+    iframe.src = src;
+    iframe.addEventListener("mozbrowserresize", function (e) {
+      is(e.detail.width,  300, "Received correct resize event width");
+      is(e.detail.height, 300, "Received correct resize event height");
+      SimpleTest.executeSoon(checkSize.bind(undefined, iframe));
+    });
+    document.body.appendChild(iframe);
+  }
+
+  testIFrameWithSrc(srcResizeTo);
+  testIFrameWithSrc(srcResizeBy);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Close.js b/dom/browser-element/mochitest/browserElement_Close.js
new file mode 100644
index 0000000000..57bdf384d1
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Close.js
@@ -0,0 +1,24 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that window.close() works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  iframe.addEventListener("mozbrowserclose", function(e) {
+    ok(true, "got mozbrowserclose event.");
+    SimpleTest.finish();
+  });
+
+  iframe.src = "data:text/html,<html><body><script>window.close()</scr"+"ipt></body></html>";
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_CloseFromOpener.js b/dom/browser-element/mochitest/browserElement_CloseFromOpener.js
new file mode 100644
index 0000000000..65ea4d1b7f
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_CloseFromOpener.js
@@ -0,0 +1,33 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 764718 - Test that window.close() works from the opener window.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    ok(true, "got openwindow event.");
+    document.body.appendChild(e.detail.frameElement);
+
+    e.detail.frameElement.addEventListener("mozbrowserclose", function(e) {
+      ok(true, "got mozbrowserclose event.");
+      SimpleTest.finish();
+    });
+  });
+
+
+  document.body.appendChild(iframe);
+
+  // file_browserElement_CloseFromOpener opens a new window and then calls
+  // close() on it.
+  iframe.src = "file_browserElement_CloseFromOpener.html";
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_ContextmenuEvents.js b/dom/browser-element/mochitest/browserElement_ContextmenuEvents.js
new file mode 100644
index 0000000000..66aa8e0159
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_ContextmenuEvents.js
@@ -0,0 +1,351 @@
+'use strict';
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.setClipboardPlainTextOnlyPref(false);
+browserElementTestHelpers.addPermission();
+
+var audioUrl = 'http://mochi.test:8888/tests/dom/browser-element/mochitest/audio.ogg';
+var videoUrl = 'http://mochi.test:8888/tests/dom/browser-element/mochitest/short-video.ogv';
+
+function runTests() {
+  createIframe(function onIframeLoaded() {
+    checkEmptyContextMenu();
+  });
+}
+
+function checkEmptyContextMenu() {
+  sendContextMenuTo('body', function onContextMenu(detail) {
+    is(detail.contextmenu, null, 'Body context clicks have no context menu');
+
+    checkInnerContextMenu();
+  });
+}
+
+function checkInnerContextMenu() {
+  sendContextMenuTo('#inner-link', function onContextMenu(detail) {
+    is(detail.systemTargets.length, 1, 'Includes anchor data');
+    is(detail.contextmenu.items.length, 3, 'Inner clicks trigger correct customized menu');
+    is(detail.contextmenu.items[0].label, 'foo', 'Customized menu has a "foo" menu item');
+    is(detail.contextmenu.items[1].label, 'bar', 'Customized menu has a "bar" menu item');
+    is(detail.contextmenu.items[2].id, 'copy-link', '#inner-link has a copy-link menu item');
+    is(detail.contextmenu.customized, true, 'Make sure contextmenu has customized items');
+
+    var target = detail.systemTargets[0];
+    is(target.nodeName, 'A', 'Reports correct nodeName');
+    is(target.data.uri, 'foo.html', 'Reports correct uri');
+    is(target.data.text, 'Menu 1', 'Reports correct link text');
+
+    checkCustomContextMenu();
+  });
+}
+
+function checkCustomContextMenu() {
+  sendContextMenuTo('#menu1-trigger', function onContextMenu(detail) {
+    is(detail.contextmenu.items.length, 2, 'trigger custom contextmenu');
+
+    checkNestedContextMenu();
+  });
+}
+
+function checkNestedContextMenu() {
+  sendContextMenuTo('#menu2-trigger', function onContextMenu(detail) {
+    var innerMenu = detail.contextmenu.items.filter(function(x) {
+      return x.type === 'menu';
+    });
+    is(detail.systemTargets.length, 2, 'Includes two systemTargets');
+    is(detail.systemTargets[0].nodeName, 'IMG', 'Includes "IMG" node');
+    is(detail.systemTargets[0].data.uri, 'example.png', 'Img data has the correct uri');
+    is(detail.systemTargets[1].nodeName, 'A', 'Includes "A" node');
+    is(detail.systemTargets[1].data.uri, 'bar.html', 'Anchor has the correct uri');
+    ok(innerMenu.length > 0, 'Menu contains a nested menu');
+
+    is(detail.contextmenu.items.length, 4, 'We have correct # of menu items')
+    is(detail.contextmenu.customized, true, 'Make sure contextmenu has customized items');
+    is(detail.contextmenu.items[0].label, 'outer', 'Customized menu has an "outer" menu item');
+    is(detail.contextmenu.items[1].label, 'submenu', 'Customized menu has an "submenu" menu item');
+    is(detail.contextmenu.items[2].id, 'copy-link', 'Has a copy-link menu item');
+    is(detail.contextmenu.items[3].id, 'copy-image', 'Has a copy-image menu item');
+    checkPreviousContextMenuHandler();
+  });
+}
+
+ // Finished testing the data passed to the contextmenu handler,
+ // now we start selecting contextmenu items
+function checkPreviousContextMenuHandler() {
+  // This is previously triggered contextmenu data, since we have
+  // fired subsequent contextmenus this should not be mistaken
+  // for a current menuitem
+  var detail = previousContextMenuDetail;
+  var previousId = detail.contextmenu.items[0].id;
+  checkContextMenuCallbackForId(detail, previousId, function onCallbackFired(label) {
+    is(label, null, 'Callback label should be empty since this handler is old');
+
+    checkCurrentContextMenuHandler();
+  });
+}
+
+function checkCurrentContextMenuHandler() {
+  // This triggers a current menuitem
+  var detail = currentContextMenuDetail;
+
+  var innerMenu = detail.contextmenu.items.filter(function(x) {
+    return x.type === 'menu';
+  });
+
+  var currentId = innerMenu[0].items[1].id;
+  checkContextMenuCallbackForId(detail, currentId, function onCallbackFired(label) {
+    is(label, 'inner 2', 'Callback label should be set correctly');
+
+    checkAgainCurrentContextMenuHandler();
+  });
+}
+
+function checkAgainCurrentContextMenuHandler() {
+  // Once an item it selected, subsequent selections are ignored
+  var detail = currentContextMenuDetail;
+
+  var innerMenu = detail.contextmenu.items.filter(function(x) {
+    return x.type === 'menu';
+  });
+
+  var currentId = innerMenu[0].items[1].id;
+  checkContextMenuCallbackForId(detail, currentId, function onCallbackFired(label) {
+    is(label, null, 'Callback label should be empty since this handler has already been used');
+
+    checkCallbackWithPreventDefault();
+  });
+};
+
+// Finished testing callbacks if the embedder calls preventDefault() on the
+// mozbrowsercontextmenu event, now we start checking for some cases where the embedder
+// does not want to call preventDefault() for some reasons.
+function checkCallbackWithPreventDefault() {
+  sendContextMenuTo('#menu1-trigger', function onContextMenu(detail) {
+    var id = detail.contextmenu.items[0].id;
+    checkContextMenuCallbackForId(detail, id, function onCallbackFired(label) {
+      is(label, 'foo', 'Callback label should be set correctly');
+
+      checkCallbackWithoutPreventDefault();
+    });
+  });
+}
+
+function checkCallbackWithoutPreventDefault() {
+  sendContextMenuTo('#menu1-trigger', function onContextMenu(detail) {
+    var id = detail.contextmenu.items[0].id;
+    checkContextMenuCallbackForId(detail, id, function onCallbackFired(label) {
+      is(label, null, 'Callback label should be null');
+
+      checkImageContextMenu();
+    });
+  }, /* ignorePreventDefault */ true);
+}
+
+function checkImageContextMenu() {
+  sendContextMenuTo('#menu3-trigger', function onContextMenu(detail) {
+    var target = detail.systemTargets[0];
+    is(target.nodeName, 'IMG', 'Reports correct nodeName');
+    is(target.data.uri, 'example.png', 'Reports correct uri');
+    is(detail.contextmenu.items.length, 1, 'Reports correct # of menu items');
+    is(detail.contextmenu.items[0].id, 'copy-image', 'IMG has a copy-image menu item');
+    is(detail.contextmenu.customized, false, 'Make sure we do not have customized items');
+
+    checkVideoContextMenu();
+  }, /* ignorePreventDefault */ true);
+}
+
+function checkVideoContextMenu() {
+  sendContextMenuTo('#menu4-trigger', function onContextMenu(detail) {
+    var target = detail.systemTargets[0];
+    is(target.nodeName, 'VIDEO', 'Reports correct nodeName');
+    is(target.data.uri, videoUrl, 'Reports uri correctly in data');
+    is(target.data.hasVideo, true, 'Video data in video tag does "hasVideo"');
+
+    checkAudioContextMenu();
+  }, /* ignorePreventDefault */ true);
+}
+
+function checkAudioContextMenu() {
+  sendContextMenuTo('#menu6-trigger', function onContextMenu(detail) {
+    var target = detail.systemTargets[0];
+    is(target.nodeName, 'AUDIO', 'Reports correct nodeName');
+    is(target.data.uri, audioUrl, 'Reports uri correctly in data');
+
+    checkAudioinVideoContextMenu();
+  }, /* ignorePreventDefault */ true);
+}
+
+function checkAudioinVideoContextMenu() {
+  sendSrcTo('#menu5-trigger', audioUrl, function onSrcSet() {
+    sendContextMenuTo('#menu5-trigger', function onContextMenu(detail) {
+      var target = detail.systemTargets[0];
+      is(target.nodeName, 'VIDEO', 'Reports correct nodeName');
+      is(target.data.uri, audioUrl, 'Reports uri correctly in data');
+      is(target.data.hasVideo, false, 'Audio data in video tag reports no "hasVideo"');
+
+      checkFormNoMethod();
+    }, /* ignorePreventDefault */ true);
+  });
+}
+
+function checkFormNoMethod() {
+  sendContextMenuTo('#menu7-trigger', function onContextMenu(detail) {
+    var target = detail.systemTargets[0];
+    is(target.nodeName, 'INPUT', 'Reports correct nodeName');
+    is(target.data.method, 'get', 'Reports correct method');
+    is(target.data.action, 'no_method', 'Reports correct action url');
+    is(target.data.name, 'input1', 'Reports correct input name');
+
+    checkFormGetMethod();
+  }, /* ignorePreventDefault */ true);
+}
+
+function checkFormGetMethod() {
+  sendContextMenuTo('#menu8-trigger', function onContextMenu(detail) {
+    var target = detail.systemTargets[0];
+    is(target.nodeName, 'INPUT', 'Reports correct nodeName');
+    is(target.data.method, 'get', 'Reports correct method');
+    is(target.data.action, 'http://example.com/get_method', 'Reports correct action url');
+    is(target.data.name, 'input2', 'Reports correct input name');
+
+    checkFormPostMethod();
+  }, /* ignorePreventDefault */ true);
+}
+
+function checkFormPostMethod() {
+  sendContextMenuTo('#menu9-trigger', function onContextMenu(detail) {
+    var target = detail.systemTargets[0];
+    is(target.nodeName, 'INPUT', 'Reports correct nodeName');
+    is(target.data.method, 'post', 'Reports correct method');
+    is(target.data.action, 'post_method', 'Reports correct action url');
+    is(target.data.name, 'input3', 'Reports correct input name');
+
+    SimpleTest.finish();
+  }, /* ignorePreventDefault */ true);
+}
+
+/* Helpers */
+var mm = null;
+var previousContextMenuDetail = null;
+var currentContextMenuDetail = null;
+
+function sendSrcTo(selector, src, callback) {
+  mm.sendAsyncMessage('setsrc', { 'selector': selector, 'src': src });
+  mm.addMessageListener('test:srcset', function onSrcSet(msg) {
+    mm.removeMessageListener('test:srcset', onSrcSet);
+    callback();
+  });
+}
+
+function sendContextMenuTo(selector, callback, ignorePreventDefault) {
+  iframe.addEventListener('mozbrowsercontextmenu', function oncontextmenu(e) {
+    iframe.removeEventListener(e.type, oncontextmenu);
+
+    // The embedder should call preventDefault() on the event if it will handle
+    // it. Not calling preventDefault() means it won't handle the event and 
+    // should not be able to deal with context menu callbacks.
+    if (ignorePreventDefault !== true) {
+      e.preventDefault();
+    }
+
+    // Keep a reference to previous/current contextmenu event details.
+    previousContextMenuDetail = currentContextMenuDetail;
+    currentContextMenuDetail = e.detail;
+
+    setTimeout(function() { callback(e.detail); });
+  });
+
+  mm.sendAsyncMessage('contextmenu', { 'selector': selector });
+}
+
+function checkContextMenuCallbackForId(detail, id, callback) {
+  mm.addMessageListener('test:callbackfired', function onCallbackFired(msg) {
+    mm.removeMessageListener('test:callbackfired', onCallbackFired);
+
+    msg = SpecialPowers.wrap(msg);
+    setTimeout(function() { callback(msg.data.label); });
+  });
+
+  detail.contextMenuItemSelected(id);
+}
+
+
+var iframe = null;
+function createIframe(callback) {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.src = 'data:text/html,<html>' +
+    '<body>' +
+    '<menu type="context" id="menu1" label="firstmenu">' +
+      '<menuitem label="foo" onclick="window.onContextMenuCallbackFired(event)"></menuitem>' +
+      '<menuitem label="bar" onclick="window.onContextMenuCallbackFired(event)"></menuitem>' +
+    '</menu>' +
+    '<menu type="context" id="menu2" label="secondmenu">' +
+      '<menuitem label="outer" onclick="window.onContextMenuCallbackFired(event)"></menuitem>' +
+      '<menu label="submenu">' +
+        '<menuitem label="inner 1"></menuitem>' +
+        '<menuitem label="inner 2" onclick="window.onContextMenuCallbackFired(event)"></menuitem>' +
+      '</menu>' +
+    '</menu>' +
+    '<div id="menu1-trigger" contextmenu="menu1"><a id="inner-link" href="foo.html">Menu 1</a></div>' +
+    '<a href="bar.html" contextmenu="menu2"><img id="menu2-trigger" src="example.png" /></a>' +
+    '<img id="menu3-trigger" src="example.png" />' +
+    '<video id="menu4-trigger" src="' + videoUrl + '"></video>' +
+    '<video id="menu5-trigger" preload="metadata"></video>' +
+    '<audio id="menu6-trigger" src="' + audioUrl + '"></audio>' +
+    '<form action="no_method"><input id="menu7-trigger" name="input1"></input></form>' +
+    '<form action="http://example.com/get_method" method="get"><input id="menu8-trigger" name="input2"></input></form>' +
+    '<form action="post_method" method="post"><input id="menu9-trigger" name="input3"></input></form>' +
+    '</body></html>';
+  document.body.appendChild(iframe);
+
+  // The following code will be included in the child
+  // =========================================================================
+  function iframeScript() {
+    addMessageListener('contextmenu', function onContextMenu(msg) {
+      var document = content.document;
+      var evt = document.createEvent('HTMLEvents');
+      evt.initEvent('contextmenu', true, true);
+      document.querySelector(msg.data.selector).dispatchEvent(evt);
+    });
+
+    addMessageListener('setsrc', function onContextMenu(msg) {
+      var wrappedTarget = content.document.querySelector(msg.data.selector);
+      var target = XPCNativeWrapper.unwrap(wrappedTarget);
+      target.addEventListener('loadedmetadata', function() {
+        sendAsyncMessage('test:srcset');
+      });
+      target.src = msg.data.src;
+    });
+
+    addMessageListener('browser-element-api:call', function onCallback(msg) {
+      if (msg.data.msg_name != 'fire-ctx-callback')
+        return;
+
+      /* Use setTimeout in order to react *after* the platform */
+      content.setTimeout(function() {
+        sendAsyncMessage('test:callbackfired', { label: label });
+        label = null;
+      });
+    });
+
+    var label = null;
+    XPCNativeWrapper.unwrap(content).onContextMenuCallbackFired = function(e) {
+      label = e.target.getAttribute('label');
+    };
+  }
+  // =========================================================================
+
+  iframe.addEventListener('mozbrowserloadend', function onload(e) {
+    iframe.removeEventListener(e.type, onload);
+    mm = SpecialPowers.getBrowserFrameMessageManager(iframe);
+    mm.loadFrameScript('data:,(' + iframeScript.toString() + ')();', false);
+
+    // Now we're ready, let's start testing.
+    callback();
+  });
+}
+
+addEventListener('testready', runTests);
diff --git a/dom/browser-element/mochitest/browserElement_CookiesNotThirdParty.js b/dom/browser-element/mochitest/browserElement_CookiesNotThirdParty.js
new file mode 100644
index 0000000000..32f877786c
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_CookiesNotThirdParty.js
@@ -0,0 +1,51 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 806127 - Test that cookies set by <iframe mozbrowser> are not considered
+// third-party.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  const innerPage = 'http://example.com/tests/dom/browser-element/mochitest/file_browserElement_CookiesNotThirdParty.html';
+
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    if (e.detail.message == 'next') {
+      iframe.src = innerPage + '?step=2';
+      return;
+    }
+
+    if (e.detail.message.startsWith('success:')) {
+      ok(true, e.detail.message);
+      return;
+    }
+
+    if (e.detail.message.startsWith('failure:')) {
+      ok(false, e.detail.message);
+      return;
+    }
+
+    if (e.detail.message == 'finish') {
+      SimpleTest.finish();
+    }
+  });
+
+  // innerPage will set a cookie and then alert('next').  We'll load
+  // innerPage?step=2.  That page will check that the cooke exists (despite the
+  // fact that we've disabled third-party cookies) and alert('success:') or
+  // alert('failure:'), as appropriate.  Finally, the page will
+  // alert('finish');
+  iframe.src = innerPage;
+  document.body.appendChild(iframe);
+}
+
+// Disable third-party cookies for this test.
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set': [['network.cookie.cookieBehavior', 1]]}, runTest);
+});
diff --git a/dom/browser-element/mochitest/browserElement_CopyPaste.js b/dom/browser-element/mochitest/browserElement_CopyPaste.js
new file mode 100644
index 0000000000..b23feef590
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_CopyPaste.js
@@ -0,0 +1,339 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that "cut, copy, paste, selectall" and caretstatechanged event works from inside an <iframe mozbrowser>.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("untriaged");
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.setupAccessibleCaretPref();
+browserElementTestHelpers.addPermission();
+const { Services } = SpecialPowers.Cu.import('resource://gre/modules/Services.jsm');
+
+var gTextarea = null;
+var mm;
+var iframeOuter;
+var iframeInner;
+var state = 0;
+var stateMeaning;
+var defaultData;
+var pasteData;
+var focusScript;
+var createEmbededFrame = false;
+var testSelectionChange = false;
+
+function copyToClipboard(str) {
+  gTextarea.value = str;
+  SpecialPowers.wrap(gTextarea).editor.selectAll();
+  SpecialPowers.wrap(gTextarea).editor.copy();
+}
+
+function getScriptForGetContent() {
+  var script = 'data:,\
+    var elt = content.document.getElementById("text"); \
+    var txt = ""; \
+    if (elt) { \
+      if (elt.tagName === "DIV" || elt.tagName === "BODY") { \
+        txt = elt.textContent; \
+      } else { \
+        txt = elt.value; \
+      } \
+    } \
+    sendAsyncMessage("content-text", txt);';
+  return script;
+}
+
+function getScriptForSetFocus() {
+  var script = 'data:,' + focusScript + 'sendAsyncMessage("content-focus")';
+  return script;
+}
+
+function runTest() {
+  iframeOuter = document.createElement('iframe');
+  iframeOuter.setAttribute('mozbrowser', 'true');
+  if (createEmbededFrame) {
+    iframeOuter.src = "file_empty.html";
+  }
+  document.body.appendChild(iframeOuter);
+
+  gTextarea = document.createElement('textarea');
+  document.body.appendChild(gTextarea);
+
+  iframeOuter.addEventListener("mozbrowserloadend", function onloadend(e) {
+    iframeOuter.removeEventListener("mozbrowserloadend", onloadend);
+
+    if (createEmbededFrame) {
+      var contentWin = SpecialPowers.wrap(iframeOuter)
+                             .QueryInterface(SpecialPowers.Ci.nsIFrameLoaderOwner)
+                             .frameLoader.docShell.contentViewer.DOMDocument.defaultView;
+      var contentDoc = contentWin.document;
+      iframeInner = contentDoc.createElement('iframe');
+      iframeInner.setAttribute('mozbrowser', true);
+      iframeInner.setAttribute('remote', 'false');
+      contentDoc.body.appendChild(iframeInner);
+      iframeInner.addEventListener("mozbrowserloadend", function onloadendinner(e) {
+        iframeInner.removeEventListener("mozbrowserloadend", onloadendinner);
+        mm = SpecialPowers.getBrowserFrameMessageManager(iframeInner);
+        dispatchTest(e);
+      });
+    } else {
+      iframeInner = iframeOuter;
+      mm = SpecialPowers.getBrowserFrameMessageManager(iframeInner);
+      dispatchTest(e);
+    }
+  });
+}
+
+function doCommand(cmd) {
+  var COMMAND_MAP = {
+    'cut': 'cmd_cut',
+    'copy': 'cmd_copyAndCollapseToEnd',
+    'paste': 'cmd_paste',
+    'selectall': 'cmd_selectAll'
+  };
+  var script = 'data:,docShell.doCommand("' + COMMAND_MAP[cmd] + '");';
+  mm.loadFrameScript(script, false);
+}
+
+function dispatchTest(e) {
+  iframeInner.addEventListener("mozbrowserloadend", function onloadend2(e) {
+    iframeInner.removeEventListener("mozbrowserloadend", onloadend2);
+    iframeInner.focus();
+    SimpleTest.executeSoon(function() { testSelectAll(e); });
+  });
+
+  switch (state) {
+    case 0: // test for textarea
+      defaultData = "Test for selection change event";
+      pasteData = "from parent ";
+      iframeInner.src = "data:text/html,<html><body>" +
+                   "<textarea id='text'>" + defaultData + "</textarea>" +
+                   "</body>" +
+                   "</html>";
+      stateMeaning = " (test: textarea)";
+      focusScript = "var elt=content.document.getElementById('text');elt.focus();elt.select();";
+      break;
+    case 1: // test for input text
+      defaultData = "Test for selection change event";
+      pasteData = "from parent ";
+      iframeInner.src = "data:text/html,<html><body>" +
+                   "<input type='text' id='text' value='" + defaultData + "'>" +
+                   "</body>" +
+                   "</html>";
+      stateMeaning = " (test: <input type=text>)";
+      focusScript = "var elt=content.document.getElementById('text');elt.focus();elt.select();";
+      break;
+    case 2: // test for input number
+      defaultData = "12345";
+      pasteData = "67890";
+      iframeInner.src = "data:text/html,<html><body>" +
+                   "<input type='number' id='text' value='" + defaultData + "'>" +
+                   "</body>" +
+                   "</html>";
+      stateMeaning = " (test: <input type=number>)";
+      focusScript = "var elt=content.document.getElementById('text');elt.focus();elt.select();";
+      break;
+    case 3: // test for div contenteditable
+      defaultData = "Test for selection change event";
+      pasteData = "from parent ";
+      iframeInner.src = "data:text/html,<html><body>" +
+                   "<div contenteditable='true' id='text'>" + defaultData + "</div>" +
+                   "</body>" +
+                   "</html>";
+      stateMeaning = " (test: content editable div)";
+      focusScript = "var elt=content.document.getElementById('text');elt.focus();";
+      break;
+    case 4: // test for normal div
+      defaultData = "Test for selection change event";
+      pasteData = "from parent ";
+      iframeInner.src = "data:text/html,<html><body>" +
+                   "<div id='text'>" + defaultData + "</div>" +
+                   "</body>" +
+                   "</html>";
+      stateMeaning = " (test: normal div)";
+      focusScript = "var elt=content.document.getElementById('text');elt.focus();";
+      break;
+    case 5: // test for normal div with designMode:on
+      defaultData = "Test for selection change event";
+      pasteData = "from parent ";
+      iframeInner.src = "data:text/html,<html><body id='text'>" +
+                   defaultData +
+                   "</body>" +
+                   "<script>document.designMode='on';</script>" +
+                   "</html>";
+      stateMeaning = " (test: normal div with designMode:on)";
+      focusScript = "var elt=content.document.getElementById('text');elt.focus();";
+      break;
+    default:
+      if (createEmbededFrame || browserElementTestHelpers.getOOPByDefaultPref()) {
+        SimpleTest.finish();
+      } else {
+        createEmbededFrame = true;
+
+        // clean up and run test again.
+        document.body.removeChild(iframeOuter);
+        document.body.removeChild(gTextarea);
+        state = 0;
+        runTest();
+      }
+      break;
+  }
+}
+
+function isChildProcess() {
+  return SpecialPowers.Cc["@mozilla.org/xre/app-info;1"]
+                         .getService(SpecialPowers.Ci.nsIXULRuntime)
+                         .processType != SpecialPowers.Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT;
+}
+
+function testSelectAll(e) {
+  // Skip mozbrowser test if we're at child process.
+  if (!isChildProcess()) {
+    let eventName = "mozbrowsercaretstatechanged";
+    iframeOuter.addEventListener(eventName, function caretchangeforselectall(e) {
+      iframeOuter.removeEventListener(eventName, caretchangeforselectall, true);
+      ok(true, "got mozbrowsercaretstatechanged event." + stateMeaning);
+      ok(e.detail, "event.detail is not null." + stateMeaning);
+      ok(e.detail.width != 0, "event.detail.width is not zero" + stateMeaning);
+      ok(e.detail.height != 0, "event.detail.height is not zero" + stateMeaning);
+      SimpleTest.executeSoon(function() { testCopy1(e); });
+    }, true);
+  }
+
+  mm.addMessageListener('content-focus', function messageforfocus(msg) {
+    mm.removeMessageListener('content-focus', messageforfocus);
+    // test selectall command, after calling this the caretstatechanged event should be fired.
+    doCommand('selectall');
+    if (isChildProcess()) {
+      SimpleTest.executeSoon(function() { testCopy1(e); });
+    }
+  });
+
+  mm.loadFrameScript(getScriptForSetFocus(), false);
+}
+
+function testCopy1(e) {
+  // Right now we're at "selectall" state, so we can test copy commnad by
+  // calling doCommand
+  copyToClipboard("");
+  let setup = function() {
+    doCommand("copy");
+  };
+
+  let nextTest = function(success) {
+    ok(success, "copy command works" + stateMeaning);
+    SimpleTest.executeSoon(function() { testPaste1(e); });
+  };
+
+  let success = function() {
+    nextTest(true);
+  }
+
+  let fail = function() {
+    nextTest(false);
+  }
+
+  let compareData = defaultData;
+  SimpleTest.waitForClipboard(compareData, setup, success, fail);
+}
+
+function testPaste1(e) {
+  // Next test paste command, first we copy to global clipboard in parent side.
+  // Then paste it to child side.
+  copyToClipboard(pasteData);
+
+  doCommand('selectall');
+  doCommand("paste");
+  SimpleTest.executeSoon(function() { testPaste2(e); });
+}
+
+function testPaste2(e) {
+  mm.addMessageListener('content-text', function messageforpaste(msg) {
+    mm.removeMessageListener('content-text', messageforpaste);
+    if (state == 4) {
+      // normal div cannot paste, so the content remain unchange
+      ok(SpecialPowers.wrap(msg).json === defaultData, "paste command works" + stateMeaning);
+    } else if (state == 3 && browserElementTestHelpers.getOOPByDefaultPref()) {
+      // Something weird when we doCommand with content editable element in OOP. Mark this case as todo
+      todo(false, "paste command works" + stateMeaning);
+    } else {
+      ok(SpecialPowers.wrap(msg).json === pasteData, "paste command works" + stateMeaning);
+    }
+    SimpleTest.executeSoon(function() { testCut1(e); });
+  });
+
+  mm.loadFrameScript(getScriptForGetContent(), false);
+}
+
+function testCut1(e) {
+  // Clean clipboard first
+  copyToClipboard("");
+  let setup = function() {
+    doCommand("selectall");
+    doCommand("cut");
+  };
+
+  let nextTest = function(success) {
+    if (state == 3 && browserElementTestHelpers.getOOPByDefaultPref()) {
+      // Something weird when we doCommand with content editable element in OOP.
+      todo(false, "cut function works" + stateMeaning);
+    } else {
+      ok(success, "cut function works" + stateMeaning);
+    }
+    SimpleTest.executeSoon(function() { testCut2(e); });
+  };
+
+  let success = function() {
+    nextTest(true);
+  }
+
+  let fail = function() {
+    nextTest(false);
+  }
+
+  let compareData = pasteData;
+  // Something weird when we doCommand with content editable element in OOP.
+  // Always true in this case
+  // Normal div case cannot cut, always true as well.
+  if ((state == 3 && browserElementTestHelpers.getOOPByDefaultPref()) ||
+      state == 4) {
+    compareData = function() { return true; }
+  }
+
+  SimpleTest.waitForClipboard(compareData, setup, success, fail);
+}
+
+function testCut2(e) {
+  mm.addMessageListener('content-text', function messageforcut(msg) {
+    mm.removeMessageListener('content-text', messageforcut);
+    // normal div cannot cut
+    if (state == 4) {
+      ok(SpecialPowers.wrap(msg).json !== "", "cut command works" + stateMeaning);
+    } else if (state == 3 && browserElementTestHelpers.getOOPByDefaultPref()) {
+      // Something weird when we doCommand with content editable element in OOP. Mark this case as todo
+      todo(false, "cut command works" + stateMeaning);
+    } else {
+      ok(SpecialPowers.wrap(msg).json === "", "cut command works" + stateMeaning);
+    }
+
+    state++;
+    dispatchTest(e);
+  });
+
+  mm.loadFrameScript(getScriptForGetContent(), false);
+}
+
+// Give our origin permission to open browsers, and remove it when the test is complete.
+var principal = SpecialPowers.wrap(document).nodePrincipal;
+var context = { url: SpecialPowers.wrap(principal.URI).spec,
+                originAttributes: {
+                  appId: principal.appId,
+                  inIsolatedMozBrowser: true }};
+
+addEventListener('testready', function() {
+  SpecialPowers.pushPermissions([
+    {type: 'browser', allow: 1, context: context}
+  ], runTest);
+});
+
diff --git a/dom/browser-element/mochitest/browserElement_DOMRequestError.js b/dom/browser-element/mochitest/browserElement_DOMRequestError.js
new file mode 100644
index 0000000000..040cb81fd4
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_DOMRequestError.js
@@ -0,0 +1,62 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test if DOMRequest returned by an iframe gets an error callback when
+// the iframe is not in the DOM.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTest() {
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  iframe1.src = 'data:text/html,<html>' +
+    '<body style="background:green">hello</body></html>';
+  document.body.appendChild(iframe1);
+
+  function testIframe(beforeRun, isErrorExpected, nextTest) {
+    return function() {
+      var error = false;
+      if (beforeRun)
+        beforeRun();
+      function testEnd() {
+        is(isErrorExpected, error);
+        SimpleTest.executeSoon(nextTest);
+      }
+
+      var domRequest = iframe1.getScreenshot(1000, 1000);
+      domRequest.onsuccess = function(e) {
+        testEnd();
+      }
+      domRequest.onerror = function(e) {
+        error = true;
+        testEnd();
+      }
+    };
+  }
+
+  function iframeLoadedHandler() {
+    iframe1.removeEventListener('mozbrowserloadend', iframeLoadedHandler);
+    // Test 1: iframe is in the DOM.
+    // Test 2: iframe is removed from the DOM.
+    // Test 3: iframe is added back into the DOM.
+    var test3 = testIframe(
+      function() {
+        document.body.appendChild(iframe1);
+      }, false,
+      function() {
+        SimpleTest.finish();
+      })
+    ;
+    var test2 = testIframe(function() {
+      document.body.removeChild(iframe1);
+    }, true, test3);
+    var test1 = testIframe(null, false, test2);
+    SimpleTest.executeSoon(test1);
+  }
+
+  iframe1.addEventListener('mozbrowserloadend', iframeLoadedHandler);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_DataURI.js b/dom/browser-element/mochitest/browserElement_DataURI.js
new file mode 100644
index 0000000000..f57f4566a9
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_DataURI.js
@@ -0,0 +1,68 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that data: URIs work with mozbrowserlocationchange events.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  iframe1.id = 'iframe1';
+  iframe1.addEventListener('mozbrowserloadend', function if1_loadend() {
+    iframe1.removeEventListener('mozbrowserloadend', if1_loadend);
+    ok(true, 'Got first loadend event.');
+    SimpleTest.executeSoon(runTest2);
+  });
+  iframe1.src = browserElementTestHelpers.emptyPage1;
+  document.body.appendChild(iframe1);
+
+  var iframe2 = document.createElement('iframe');
+  iframe2.id = 'iframe2';
+  document.body.appendChild(iframe2);
+}
+
+function runTest2() {
+  var iframe1 = document.getElementById('iframe1');
+  var iframe2 = document.getElementById('iframe2');
+
+  var sawLoadEnd = false;
+  var sawLocationChange = false;
+
+  iframe1.addEventListener('mozbrowserlocationchange', function(e) {
+    ok(e.isTrusted, 'Event should be trusted.');
+    ok(!sawLocationChange, 'Just one locationchange event.');
+    ok(!sawLoadEnd, 'locationchange before load.');
+    is(e.detail.url, 'data:text/html,1', "event's reported location");
+    sawLocationChange = true;
+  });
+
+  iframe1.addEventListener('mozbrowserloadend', function() {
+    ok(sawLocationChange, 'Loadend after locationchange.');
+    ok(!sawLoadEnd, 'Just one loadend event.');
+    sawLoadEnd = true;
+  });
+
+  function iframe2Load() {
+    if (!sawLoadEnd || !sawLocationChange) {
+      // Spin if iframe1 hasn't loaded yet.
+      SimpleTest.executeSoon(iframe2Load);
+      return;
+    }
+    ok(true, 'Got iframe2 load.');
+    SimpleTest.finish();
+  }
+  iframe2.addEventListener('load', iframe2Load);
+
+
+  iframe1.src = 'data:text/html,1';
+
+  // Load something into iframe2 to check that it doesn't trigger a
+  // locationchange for our iframe1 listener.
+  iframe2.src = browserElementTestHelpers.emptyPage2;
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_DocumentFirstPaint.js b/dom/browser-element/mochitest/browserElement_DocumentFirstPaint.js
new file mode 100644
index 0000000000..16618829ef
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_DocumentFirstPaint.js
@@ -0,0 +1,69 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 829486 - Add mozdocumentbrowserfirstpaint event.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframe;
+
+function runTestQueue(queue) {
+  if (queue.length == 0) {
+    SimpleTest.finish();
+    return;
+  }
+
+  var gotFirstPaint = false;
+  var gotFirstLocationChange = false;
+  var test = queue.shift();
+
+  function runNext() {
+    iframe.removeEventListener('mozbrowserdocumentfirstpaint', documentfirstpainthandler);
+    iframe.removeEventListener('mozbrowserloadend', loadendhandler);
+    runTestQueue(queue);
+  }
+
+  function documentfirstpainthandler(e) {
+    ok(!gotFirstPaint, "Got firstpaint only once");
+    gotFirstPaint = true;
+    if (gotFirstLocationChange) {
+      runNext();
+    }
+  }
+
+  function loadendhandler(e) {
+    gotFirstLocationChange = true;
+    if (gotFirstPaint) {
+      runNext();
+    }
+  }
+
+  iframe.addEventListener('mozbrowserdocumentfirstpaint', documentfirstpainthandler);
+  iframe.addEventListener('mozbrowserloadend', loadendhandler);
+
+  test();
+}
+
+function testChangeLocation() {
+  iframe.src = browserElementTestHelpers.emptyPage1 + "?2";
+}
+
+function testReload() {
+  iframe.reload();
+}
+
+function testFirstLoad() {
+  document.body.appendChild(iframe);
+  iframe.src = browserElementTestHelpers.emptyPage1;
+}
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  runTestQueue([testFirstLoad, testReload, testChangeLocation]);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Download.js b/dom/browser-element/mochitest/browserElement_Download.js
new file mode 100644
index 0000000000..9653876574
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Download.js
@@ -0,0 +1,37 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 983747 - Test 'download' method on iframe.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+var iframe;
+var downloadURL = 'http://test/tests/dom/browser-element/mochitest/file_download_bin.sjs';
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowserloadend', loadend);
+  iframe.src = 'data:text/html,<html><body>hello</body></html>';
+  iframe.setAttribute('remote', 'true');
+
+  document.body.appendChild(iframe);
+}
+
+function loadend() {
+  var req = iframe.download(downloadURL, { filename: 'test.bin' });
+  req.onsuccess = function() {
+    ok(true, 'Download finished as expected.');
+    SimpleTest.finish();
+  }
+  req.onerror = function() {
+    ok(false, 'Expected no error, got ' + req.error);
+  }
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_ErrorSecurity.js b/dom/browser-element/mochitest/browserElement_ErrorSecurity.js
new file mode 100644
index 0000000000..c13a371403
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_ErrorSecurity.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 764718 - Test that mozbrowsererror works for a security error.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+var iframe = null;
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  checkForDnsError();
+}
+
+function checkForDnsError() {
+  iframe.addEventListener("mozbrowsererror", function onDnsError(e) {
+    iframe.removeEventListener(e.type, onDnsError);
+    ok(true, "Got mozbrowsererror event.");
+    ok(e.detail.type == "dnsNotFound", "Event's detail has a |type| param with the value '" + e.detail.type + "'.");
+
+    checkForExpiredCertificateError();
+  });
+
+  iframe.src = "http://this_is_not_a_domain.example.com";
+}
+
+function checkForExpiredCertificateError() {
+  iframe.addEventListener("mozbrowsererror", function onCertError(e) {
+    iframe.removeEventListener(e.type, onCertError);
+    ok(true, "Got mozbrowsererror event.");
+    ok(e.detail.type == "certerror", "Event's detail has a |type| param with the value '" + e.detail.type + "'.");
+
+    checkForNoCertificateError();
+  });
+
+  iframe.src = "https://expired.example.com";
+}
+
+
+function checkForNoCertificateError() {
+  iframe.addEventListener("mozbrowsererror", function onCertError(e) {
+    iframe.removeEventListener(e.type, onCertError);
+    ok(true, "Got mozbrowsererror event.");
+    ok(e.detail.type == "certerror", "Event's detail has a |type| param with the value '" + e.detail.type + "'.");
+
+    SimpleTest.finish();
+  });
+
+  iframe.src = "https://nocert.example.com";
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_ExecuteScript.js b/dom/browser-element/mochitest/browserElement_ExecuteScript.js
new file mode 100644
index 0000000000..9019649992
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_ExecuteScript.js
@@ -0,0 +1,119 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 1174733 - Browser API: iframe.executeScript
+
+'use strict';
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTest() {
+
+  const origin = 'http://example.org';
+  const url = 'http://example.org/tests/dom/browser-element/mochitest/file_browserElement_ExecuteScript.html';
+
+  // Test if all key=>value pairs in o1 are present in o2.
+  const c = (o1, o2) => Object.keys(o1).every(k => o1[k] == o2[k]);
+
+  let scriptId = 0;
+
+  const bail = () => {
+    ok(false, `scriptId: ${scriptId++}`);
+  }
+
+  SpecialPowers.pushPermissions([
+    {type: 'browser', allow: 1, context: document},
+    {type: 'browser:universalxss', allow: 1, context: document}
+  ], function() {
+    let iframe = document.createElement('iframe');
+    iframe.setAttribute('mozbrowser', 'true');
+    iframe.addEventListener('mozbrowserloadend', function onload() {
+      iframe.removeEventListener('mozbrowserloadend', onload);
+      onReady(iframe);
+    });
+    iframe.src = url;
+    document.body.appendChild(iframe);
+  });
+
+
+  function onReady(iframe) {
+    iframe.executeScript('4 + 4', {url}).then(rv => {
+      is(rv, 8, `scriptId: ${scriptId++}`);
+      return iframe.executeScript('(() => {return {a:42}})()', {url})
+    }, bail).then(rv => {
+      ok(c(rv, {a:42}), `scriptId: ${scriptId++}`);
+      return iframe.executeScript('(() => {return {a:42}})()', {origin})
+    }, bail).then(rv => {
+      ok(c(rv, {a:42}), `scriptId: ${scriptId++}`);
+      return iframe.executeScript('(() => {return {a:42}})()', {origin, url})
+    }, bail).then(rv => {
+      ok(c(rv, {a:42}), `scriptId: ${scriptId++}`);
+      return iframe.executeScript(`
+          new Promise((resolve, reject) => {
+            resolve(document.body.textContent.trim());
+          });
+      `, {url})
+    }, bail).then(rv => {
+      is(rv, 'foo', `scriptId: ${scriptId++}`);
+      return iframe.executeScript(`
+          new Promise((resolve, reject) => {
+            resolve({a:43,b:34});
+          });
+      `, {url})
+    }, bail).then(rv => {
+      ok(c(rv, {a:43,b:34}), `scriptId: ${scriptId++}`);
+      return iframe.executeScript(`
+        … syntax error
+      `, {url});
+    }, bail).then(bail, (error) => {
+      is(error.name, 'SyntaxError: illegal character', `scriptId: ${scriptId++}`);
+      return iframe.executeScript(`
+        window
+      `, {url});
+    }).then(bail, (error) => {
+      is(error.name, 'Script last expression must be a promise or a JSON object', `scriptId: ${scriptId++}`);
+      return iframe.executeScript(`
+          new Promise((resolve, reject) => {
+            reject('BOOM');
+          });
+      `, {url});
+    }).then(bail, (error) => {
+      is(error.name, 'BOOM', `scriptId: ${scriptId++}`);
+      return iframe.executeScript(`
+          new Promise((resolve, reject) => {
+            resolve(window);
+          });
+      `, {url});
+    }).then(bail, (error) => {
+      is(error.name, 'Value returned (resolve) by promise is not a valid JSON object', `scriptId: ${scriptId++}`);
+      return iframe.executeScript('window.btoa("a")', {url})
+    }, bail).then(rv => {
+      ok(c(rv, 'YQ=='), `scriptId: ${scriptId++}`);
+      return iframe.executeScript('window.wrappedJSObject.btoa("a")', {url})
+    }, bail).then(bail, (error) => {
+      is(error.name, 'TypeError: window.wrappedJSObject is undefined', `scriptId: ${scriptId++}`);
+      return iframe.executeScript('42', {})
+    }).then(bail, error => {
+      is(error.name, 'InvalidAccessError', `scriptId: ${scriptId++}`);
+      return iframe.executeScript('42');
+    }).then(bail, error => {
+      is(error.name, 'InvalidAccessError', `scriptId: ${scriptId++}`);
+      return iframe.executeScript('43', { url: 'http://foo.com' });
+    }).then(bail, (error) => {
+      is(error.name, 'URL mismatches', `scriptId: ${scriptId++}`);
+      return iframe.executeScript('43', { url: '_' });
+    }, bail).then(bail, (error) => {
+      is(error.name, 'Malformed URL', `scriptId: ${scriptId++}`);
+      return iframe.executeScript('43', { origin: 'http://foo.com' });
+    }, bail).then(bail, (error) => {
+      is(error.name, 'Origin mismatches', `scriptId: ${scriptId++}`);
+      return iframe.executeScript('43', { origin: 'https://example.org' });
+    }, bail).then(bail, (error) => {
+      is(error.name, 'Origin mismatches', `scriptId: ${scriptId++}`);
+      SimpleTest.finish();
+    });
+  }
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_ExposableURI.js b/dom/browser-element/mochitest/browserElement_ExposableURI.js
new file mode 100644
index 0000000000..435e11a807
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_ExposableURI.js
@@ -0,0 +1,55 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 795317: Test that the browser element sanitizes its URIs by removing the
+// "unexposable" parts before sending them in the locationchange event.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+var iframe;
+
+function testPassword() {
+  function locationchange(e) {
+    var uri = e.detail.url;
+    is(uri, 'http://mochi.test:8888/tests/dom/browser-element/mochitest/file_empty.html',
+       "Username and password shouldn't be exposed in uri.");
+    SimpleTest.finish();
+  }
+
+  iframe.addEventListener('mozbrowserlocationchange', locationchange);
+  iframe.src = "http://iamuser:iampassword@mochi.test:8888/tests/dom/browser-element/mochitest/file_empty.html";
+}
+
+function testWyciwyg() {
+  var locationChangeCount = 0;
+
+  function locationchange(e) {
+    // locationChangeCount:
+    //  0 - the first load.
+    //  1 - after document.write().
+    if (locationChangeCount == 0) {
+      locationChangeCount ++;
+    } else if (locationChangeCount == 1) {
+      var uri = e.detail.url;
+      is(uri, 'http://mochi.test:8888/tests/dom/browser-element/mochitest/file_wyciwyg.html', "Scheme in string shouldn't be wyciwyg");
+      iframe.removeEventListener('mozbrowserlocationchange', locationchange);
+      SimpleTest.executeSoon(testPassword);
+    }
+  }
+
+  // file_wyciwyg.html calls document.write() to create a wyciwyg channel.
+  iframe.src = 'file_wyciwyg.html';
+  iframe.addEventListener('mozbrowserlocationchange', locationchange);
+}
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+  testWyciwyg();
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Find.js b/dom/browser-element/mochitest/browserElement_Find.js
new file mode 100644
index 0000000000..3a49681198
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Find.js
@@ -0,0 +1,145 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 1163961 - Test search API
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTest() {
+
+  let iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  iframe.src = 'data:text/html,foo bar foo XXX Foo BAR foobar foobar';
+
+  const once = (eventName) => {
+    return new Promise((resolve) => {
+      iframe.addEventListener(eventName, function onEvent(...args) {
+        iframe.removeEventListener(eventName, onEvent);
+        resolve(...args);
+      });
+    });
+  }
+
+  // Test if all key=>value pairs in o1 are present in o2.
+  const c = (o1, o2) => Object.keys(o1).every(k => o1[k] == o2[k]);
+
+  let testCount = 0;
+
+  once('mozbrowserloadend').then(() => {
+    iframe.findAll('foo', 'case-insensitive');
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: true,
+      searchString: 'foo',
+      searchLimit: 1000,
+      activeMatchOrdinal: 1,
+      numberOfMatches: 5,
+    }), `test ${testCount++}`);
+    iframe.findNext('forward');
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: true,
+      searchString: 'foo',
+      searchLimit: 1000,
+      activeMatchOrdinal: 2,
+      numberOfMatches: 5,
+    }), `test ${testCount++}`);
+    iframe.findNext('backward');
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: true,
+      searchString: 'foo',
+      searchLimit: 1000,
+      activeMatchOrdinal: 1,
+      numberOfMatches: 5,
+    }), `test ${testCount++}`);
+    iframe.findAll('xxx', 'case-sensitive');
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: true,
+      searchString: 'xxx',
+      searchLimit: 1000,
+      activeMatchOrdinal: 0,
+      numberOfMatches: 0,
+    }), `test ${testCount++}`);
+    iframe.findAll('bar', 'case-insensitive');
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: true,
+      searchString: 'bar',
+      searchLimit: 1000,
+      activeMatchOrdinal: 1,
+      numberOfMatches: 4,
+    }), `test ${testCount++}`);
+    iframe.findNext('forward');
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: true,
+      searchString: 'bar',
+      searchLimit: 1000,
+      activeMatchOrdinal: 2,
+      numberOfMatches: 4,
+    }), `test ${testCount++}`);
+    iframe.findNext('forward');
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: true,
+      searchString: 'bar',
+      searchLimit: 1000,
+      activeMatchOrdinal: 3,
+      numberOfMatches: 4,
+    }), `test ${testCount++}`);
+    iframe.findNext('forward');
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: true,
+      searchString: 'bar',
+      searchLimit: 1000,
+      activeMatchOrdinal: 4,
+      numberOfMatches: 4,
+    }), `test ${testCount++}`);
+    iframe.findNext('forward');
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: true,
+      searchString: 'bar',
+      searchLimit: 1000,
+      activeMatchOrdinal: 1,
+      numberOfMatches: 4,
+    }), `test ${testCount++}`);
+    iframe.clearMatch();
+    return once('mozbrowserfindchange');
+  }).then(({detail}) => {
+    ok(c(detail, {
+      msg_name: "findchange",
+      active: false
+    }), `test ${testCount++}`);
+    SimpleTest.finish();
+  });
+
+  document.body.appendChild(iframe);
+
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_FirstPaint.js b/dom/browser-element/mochitest/browserElement_FirstPaint.js
new file mode 100644
index 0000000000..ad67abc3aa
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_FirstPaint.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 787378 - Add mozbrowserfirstpaint event.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  var gotFirstPaint = false;
+  var gotFirstLocationChange = false;
+  iframe.addEventListener('mozbrowserfirstpaint', function(e) {
+    ok(!gotFirstPaint, "Got only one first paint.");
+    gotFirstPaint = true;
+
+    if (gotFirstLocationChange) {
+      iframe.src = browserElementTestHelpers.emptyPage1 + '?2';
+    }
+  });
+
+  iframe.addEventListener('mozbrowserlocationchange', function(e) {
+    if (e.detail.url == browserElementTestHelpers.emptyPage1) {
+      gotFirstLocationChange = true;
+      if (gotFirstPaint) {
+        iframe.src = browserElementTestHelpers.emptyPage1 + '?2';
+      }
+    }
+    else if (e.detail.url.endsWith('?2')) {
+      SimpleTest.finish();
+    }
+  });
+
+  document.body.appendChild(iframe);
+
+  iframe.src = browserElementTestHelpers.emptyPage1;
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_ForwardName.js b/dom/browser-element/mochitest/browserElement_ForwardName.js
new file mode 100644
index 0000000000..326c1ef248
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_ForwardName.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 781320 - Test that the name in <iframe mozbrowser name="foo"> is
+// forwarded down to remote mozbrowsers.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  iframe.setAttribute('name', 'foo');
+
+  iframe.addEventListener("mozbrowseropenwindow", function(e) {
+    ok(false, 'Got mozbrowseropenwindow, but should not have.');
+  });
+
+  iframe.addEventListener('mozbrowserlocationchange', function(e) {
+    ok(true, "Got locationchange to " + e.detail.url);
+    if (e.detail.url.endsWith("ForwardName.html#finish")) {
+      SimpleTest.finish();
+    }
+  });
+
+  // The file sends us messages via alert() that start with "success:" or
+  // "failure:".
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    ok(e.detail.message.startsWith('success:'), e.detail.message);
+  });
+
+  document.body.appendChild(iframe);
+
+  // This file does window.open('file_browserElement_ForwardName.html#finish',
+  // 'foo');  That should open in the curent window, because the window should
+  // be named foo.
+  iframe.src = 'file_browserElement_ForwardName.html';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_FrameWrongURI.js b/dom/browser-element/mochitest/browserElement_FrameWrongURI.js
new file mode 100644
index 0000000000..c3f37b4c8b
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_FrameWrongURI.js
@@ -0,0 +1,52 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 804446 - Test that window.open(javascript:..) works with <iframe mozbrowser>.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframeJS = document.createElement('iframe');
+  iframeJS.setAttribute('mozbrowser', 'true');
+
+  iframeJS.addEventListener('mozbrowserloadstart', function(e) {
+    ok(false, "This should not happen!");
+  });
+
+  iframeJS.addEventListener('mozbrowserloadend', function(e) {
+    ok(false, "This should not happen!");
+  });
+
+  iframeJS.src = 'javascript:alert("Foo");';
+  document.body.appendChild(iframeJS);
+
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  var gotPopup = false;
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    is(gotPopup, false, 'Should get just one popup.');
+    gotPopup = true;
+
+    document.body.appendChild(e.detail.frameElement);
+  });
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    ok(gotPopup, 'Got mozbrowseropenwindow event before showmodalprompt event.');
+    if (e.detail.message.indexOf("success") == 0) {
+      ok(true, e.detail.message);
+      SimpleTest.finish();
+    }
+    else {
+      ok(false, "Got invalid message: " + e.detail.message);
+    }
+  });
+
+  iframe.src = 'file_browserElement_FrameWrongURI.html';
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_GetContentDimensions.js b/dom/browser-element/mochitest/browserElement_GetContentDimensions.js
new file mode 100644
index 0000000000..722c42b77a
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_GetContentDimensions.js
@@ -0,0 +1,66 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 757859 - Test the getContentDimensions functionality of mozbrowser
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var resizeContent = function() {
+  var innerBox = content.document.getElementById('abox');
+  innerBox.style.width = '800px';
+  innerBox.style.height = '800px';
+}
+
+function runTest() {
+
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+
+  var iframeWidth = 400;
+  var iframeHeight = 400;
+  var numIframeLoaded = 0;
+  var numResizeEvents = 0;
+  var mm;
+
+  iframe1.src = 'data:text/html,<html><body><div id=\'abox\' ' +
+    'style=\'background:blue;width:200px;height:200px\'>test</div></body></html>';
+  iframe1.style.width = iframeWidth + 'px';
+  iframe1.style.height = iframeHeight + 'px';
+  document.body.appendChild(iframe1);
+
+  function iframeScrollAreaChanged(e) {
+    numResizeEvents++;
+    if (numResizeEvents === 1) {
+      ok(true, 'Resize event when changing content size');
+      ok(e.detail.width > iframeWidth, 'Iframes content is larger than iframe');
+      ok(e.detail.height > iframeHeight, 'Iframes content is larger than iframe');
+      iframe1.src = 'data:text/html,<html><body><div id=\'abox\' ' +
+        'style=\'background:blue;width:200px;height:200px\'>test</div></body></html>';
+    } else if (numResizeEvents === 2) {
+      ok(true, 'Resize event when changing src');
+      iframe1.removeEventListener('mozbrowserresize', iframeScrollAreaChanged);
+      SimpleTest.finish();
+    }
+  }
+
+  function iframeLoadedHandler() {
+    iframe1.removeEventListener('mozbrowserloadend', iframeLoadedHandler);
+    mm = SpecialPowers.getBrowserFrameMessageManager(iframe1);
+    iframe1.getContentDimensions().onsuccess = function(e) {
+      ok(typeof e.target.result.width === 'number', 'Received width');
+      ok(typeof e.target.result.height === 'number', 'Received height');
+      ok(e.target.result.height <= iframeHeight, 'Iframes content is smaller than iframe');
+      ok(e.target.result.width <= iframeWidth, 'Iframes content is smaller than iframe');
+      iframe1.addEventListener('mozbrowserscrollareachanged', iframeScrollAreaChanged);
+      mm.loadFrameScript('data:,(' + resizeContent.toString() + ')();', false);
+    }
+  }
+
+  iframe1.addEventListener('mozbrowserloadend', iframeLoadedHandler);
+}
+
+addEventListener('load', function() {
+  SimpleTest.executeSoon(runTest);
+});
diff --git a/dom/browser-element/mochitest/browserElement_GetScreenshot.js b/dom/browser-element/mochitest/browserElement_GetScreenshot.js
new file mode 100644
index 0000000000..75d70f04c8
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_GetScreenshot.js
@@ -0,0 +1,117 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test the getScreenshot property for mozbrowser
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTest() {
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+
+  iframe1.src = 'data:text/html,<html>' +
+    '<body style="background:green">hello</body></html>';
+  document.body.appendChild(iframe1);
+
+  var screenshotImageDatas = [];
+
+  function screenshotTaken(aScreenshotImageData) {
+    screenshotImageDatas.push(aScreenshotImageData);
+
+    if (screenshotImageDatas.length === 1) {
+      ok(true, 'Got initial non blank screenshot');
+
+      var view = aScreenshotImageData.data;
+      if (view[3] !== 255) {
+        ok(false, 'The first pixel of initial screenshot is not opaque');
+        SimpleTest.finish();
+        return;
+      }
+      ok(true, 'Verified the first pixel of initial screenshot is opaque');
+
+      iframe1.src = 'data:text/html,<html>' +
+        '<body style="background:transparent">hello</body></html>';
+
+      iframe1.addEventListener('mozbrowserloadend', ()=>takeScreenshot('image/png'));
+
+    }
+    else if (screenshotImageDatas.length === 2) {
+      ok(true, 'Got updated screenshot after source page changed');
+
+      var view = aScreenshotImageData.data;
+      if (view[3] !== 0) {
+        // The case here will always fail when oop'd on Firefox Desktop,
+        // but not on B2G Emulator
+        // See https://bugzil.la/878003#c20
+
+        var isB2G = (navigator.platform === '');
+        info('navigator.platform: ' + navigator.platform);
+        if (!isB2G && browserElementTestHelpers.getOOPByDefaultPref()) {
+          todo(false, 'The first pixel of updated screenshot is not transparent');
+        } else {
+          ok(false, 'The first pixel of updated screenshot is not transparent');
+        }
+        SimpleTest.finish();
+        return;
+      }
+
+      ok(true, 'Verified the first pixel of updated screenshot is transparent');
+      SimpleTest.finish();
+    }
+  }
+
+  // We continually take screenshots until we get one that we are
+  // happy with.
+  function takeScreenshot(mimeType) {
+    function gotImage(e) {
+      // |this| is the Image.
+
+      URL.revokeObjectURL(this.src);
+
+      if (e.type === 'error' || !this.width || !this.height) {
+        ok(false, "load image error");
+        SimpleTest.finish();
+        return;
+      }
+
+      var canvas = document.createElement('canvas');
+      canvas.width = canvas.height = 1000;
+      var ctx = canvas.getContext('2d');
+      ctx.drawImage(this, 0, 0);
+      var imageData = ctx.getImageData(0, 0, 1000, 1000);
+
+      screenshotTaken(imageData);
+    }
+
+    function getScreenshotImageData(e) {
+      var blob = e.target.result;
+      if (blob.type !== mimeType) {
+        ok(false, 'MIME type of screenshot taken incorrect');
+        SimpleTest.finish();
+      }
+
+      if (blob.size === 0) {
+        ok(false, "get screenshot image error");
+        SimpleTest.finish();
+      }
+
+      var img = new Image();
+      img.src = URL.createObjectURL(blob);
+      img.onload = img.onerror = gotImage;
+    }
+
+    iframe1.getScreenshot(1000, 1000, mimeType).onsuccess =
+      getScreenshotImageData;
+  }
+
+  function iframeLoadedHandler(e) {
+    iframe1.removeEventListener('mozbrowserloadend', iframeLoadedHandler);
+    takeScreenshot('image/jpeg');
+  }
+
+  iframe1.addEventListener('mozbrowserloadend', iframeLoadedHandler);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_GetScreenshotDppx.js b/dom/browser-element/mochitest/browserElement_GetScreenshotDppx.js
new file mode 100644
index 0000000000..1d61f6afc1
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_GetScreenshotDppx.js
@@ -0,0 +1,107 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test the getScreenshot property for mozbrowser
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTest() {
+  var dppxPref = 'layout.css.devPixelsPerPx';
+  var cssPixelWidth = 600;
+  var cssPixelHeight = 400;
+
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('width', cssPixelWidth);
+  iframe1.setAttribute('height', cssPixelHeight);
+  iframe1.setAttribute('mozbrowser', 'true');
+
+  iframe1.src = 'data:text/html,<html><body>hello</body></html>';
+  document.body.appendChild(iframe1);
+
+  var images = [];
+
+  function screenshotTaken(image) {
+    images.push(image);
+    if (images.length === 1) {
+      ok(true, 'Got initial non blank screenshot');
+
+      if (image.width !== cssPixelWidth || image.height !== cssPixelHeight) {
+        ok(false, 'The pixel width of the image received is not correct');
+        SimpleTest.finish();
+        return;
+      }
+      ok(true, 'The pixel width of the image received is correct');
+
+      SpecialPowers.pushPrefEnv(
+        {'set': [['layout.css.devPixelsPerPx', 2]]}, takeScreenshot);
+    }
+    else if (images.length === 2) {
+      ok(true, 'Got updated screenshot after source page changed');
+
+      if (image.width !== cssPixelWidth * 2 ||
+          image.height !== cssPixelHeight * 2) {
+        ok(false, 'The pixel width of the 2dppx image received is not correct');
+        SimpleTest.finish();
+        return;
+      }
+      ok(true, 'The pixel width of the 2dppx image received is correct');
+      SimpleTest.finish();
+    }
+  }
+
+  function takeScreenshot() {
+    function gotImage(e) {
+      // |this| is the Image.
+
+      URL.revokeObjectURL(this.src);
+
+      if (e.type === 'error' || !this.width || !this.height) {
+        tryAgain();
+
+        return;
+      }
+
+      screenshotTaken(this);
+    }
+
+    function tryAgain() {
+      if (--attempts === 0) {
+        ok(false, 'Timed out waiting for correct screenshot');
+        SimpleTest.finish();
+      } else {
+        setTimeout(function() {
+          iframe1.getScreenshot(cssPixelWidth, cssPixelHeight).onsuccess =
+            getScreenshotImageData;
+        }, 200);
+      }
+    }
+
+    function getScreenshotImageData(e) {
+      var blob = e.target.result;
+      if (blob.size === 0) {
+        tryAgain();
+
+        return;
+      }
+
+      var img = new Image();
+      img.src = URL.createObjectURL(blob);
+      img.onload = img.onerror = gotImage;
+    }
+
+    var attempts = 10;
+    iframe1.getScreenshot(cssPixelWidth, cssPixelHeight).onsuccess =
+      getScreenshotImageData;
+  }
+
+  function iframeLoadedHandler() {
+    SpecialPowers.pushPrefEnv(
+      {'set': [['layout.css.devPixelsPerPx', 1]]}, takeScreenshot);
+  }
+
+  iframe1.addEventListener('mozbrowserloadend', iframeLoadedHandler);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Iconchange.js b/dom/browser-element/mochitest/browserElement_Iconchange.js
new file mode 100644
index 0000000000..367a2de15c
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Iconchange.js
@@ -0,0 +1,129 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the onmozbrowsericonchange event works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function createHtml(link) {
+  return 'data:text/html,<html><head>' + link + '<body></body></html>';
+}
+
+function createLink(name, sizes, rel) {
+  var s = sizes ? 'sizes="' + sizes + '"' : '';
+  if (!rel) {
+    rel = 'icon';
+  }
+  return '<link rel="' + rel + '" type="image/png" ' + s +
+    ' href="http://example.com/' + name + '.png">';
+}
+
+function runTest() {
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe1);
+
+  // iframe2 is a red herring; we modify its favicon but don't listen for
+  // iconchanges; we want to make sure that its iconchange events aren't
+  // picked up by the listener on iframe1.
+  var iframe2 = document.createElement('iframe');
+  iframe2.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe2);
+
+  // iframe3 is another red herring.  It's not a mozbrowser, so we shouldn't
+  // get any iconchange events on it.
+  var iframe3 = document.createElement('iframe');
+  document.body.appendChild(iframe3);
+
+  var numIconChanges = 0;
+
+  iframe1.addEventListener('mozbrowsericonchange', function(e) {
+
+    numIconChanges++;
+
+    if (numIconChanges == 1) {
+      is(e.detail.href, 'http://example.com/myicon.png');
+
+      // We should recieve iconchange events when the user creates new links
+      // to a favicon, but only when we listen for them
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.title='New title';",
+                                    /* allowDelayedLoad = */ false);
+
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=ICON href=http://example.com/newicon.png>')",
+                                    /* allowDelayedLoad = */ false);
+
+      SpecialPowers.getBrowserFrameMessageManager(iframe2)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=ICON href=http://example.com/newicon.png>')",
+                                    /* allowDelayedLoad = */ false);
+    }
+    else if (numIconChanges == 2) {
+      is(e.detail.href, 'http://example.com/newicon.png');
+
+      // Full new pages should trigger iconchange events
+      iframe1.src = createHtml(createLink('3rdicon'));
+    }
+    else if (numIconChanges == 3) {
+      is(e.detail.href, 'http://example.com/3rdicon.png');
+
+      // the rel attribute can have various space seperated values, make
+      // sure we only pick up correct values for 'icon'
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=shortcuticon href=http://example.com/newicon.png>')",
+                                    /* allowDelayedLoad = */ false);
+      // Test setting a page with multiple links elements
+      iframe1.src = createHtml(createLink('another') + createLink('icon'));
+    }
+    else if (numIconChanges == 4) {
+      is(e.detail.href, 'http://example.com/another.png');
+      // 2 events will be triggered by previous test, wait for next
+    }
+    else if (numIconChanges == 5) {
+      is(e.detail.href, 'http://example.com/icon.png');
+
+      // Make sure icon check is case insensitive
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=ICON href=http://example.com/ucaseicon.png>')",
+                                    /* allowDelayedLoad = */ false);
+    }
+    else if (numIconChanges == 6) {
+      is(e.detail.href, 'http://example.com/ucaseicon.png');
+      iframe1.src = createHtml(createLink('testsize', '50x50', 'icon'));
+    }
+    else if (numIconChanges == 7) {
+      is(e.detail.href, 'http://example.com/testsize.png');
+      is(e.detail.sizes, '50x50');
+      iframe1.src = createHtml(createLink('testapple1', '100x100', 'apple-touch-icon'));
+    } else if (numIconChanges == 8) {
+      is(e.detail.href, 'http://example.com/testapple1.png');
+      is(e.detail.rel, 'apple-touch-icon');
+      is(e.detail.sizes, '100x100');
+
+      iframe1.src = createHtml(createLink('testapple2', '100x100', 'apple-touch-icon-precomposed'));
+    } else if (numIconChanges == 9) {
+      is(e.detail.href, 'http://example.com/testapple2.png');
+      is(e.detail.rel, 'apple-touch-icon-precomposed');
+      is(e.detail.sizes, '100x100');
+      SimpleTest.finish();
+    } else {
+      ok(false, 'Too many iconchange events.');
+    }
+  });
+
+  iframe3.addEventListener('mozbrowsericonchange', function(e) {
+    ok(false, 'Should not get a iconchange event for iframe3.');
+  });
+
+
+  iframe1.src = createHtml(createLink('myicon'));
+  // We should not recieve icon change events for either of the below iframes
+  iframe2.src = createHtml(createLink('myicon'));
+  iframe3.src = createHtml(createLink('myicon'));
+
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_LoadEvents.js b/dom/browser-element/mochitest/browserElement_LoadEvents.js
new file mode 100644
index 0000000000..8b43d8e753
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_LoadEvents.js
@@ -0,0 +1,120 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that an iframe with the |mozbrowser| attribute emits mozbrowserloadX
+// events when this page is in the whitelist.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  // Load emptypage1 into the iframe, wait for that to finish loading, then
+  // call runTest2.
+  //
+  // This should trigger loadstart, locationchange, and loadend events.
+
+  var seenLoadEnd = false;
+  var seenLoadStart = false;
+  var seenLocationChange = false;
+
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  iframe.id = 'iframe';
+  iframe.src = 'http://example.com/tests/dom/browser-element/mochitest/file_browserElement_LoadEvents.html';
+
+  function loadstart(e) {
+    ok(e.isTrusted, 'Event should be trusted.');
+    ok(!seenLoadEnd, 'loadstart before loadend.');
+    ok(!seenLoadStart, 'Just one loadstart event.');
+    ok(!seenLocationChange, 'loadstart before locationchange.');
+    seenLoadStart = true;
+  }
+
+  function locationchange(e) {
+    ok(e.isTrusted, 'Event should be trusted.');
+    ok(!seenLocationChange, 'Just one locationchange event.');
+    seenLocationChange = true;
+    ok(seenLoadStart, 'Location change after load start.');
+    ok(!seenLoadEnd, 'Location change before load end.');
+    ok(e.detail.url, browserElementTestHelpers.emptyPage1, "event's reported location");
+  }
+
+  function loadend(e) {
+    ok(e.isTrusted, 'Event should be trusted.');
+    ok(seenLoadStart, 'loadend after loadstart.');
+    ok(!seenLoadEnd, 'Just one loadend event.');
+    ok(seenLocationChange, 'loadend after locationchange.');
+    is(e.detail.backgroundColor, 'rgb(0, 128, 0)', 'Expected background color reported')
+    seenLoadEnd = true;
+  }
+
+  iframe.addEventListener('mozbrowserloadstart', loadstart);
+  iframe.addEventListener('mozbrowserlocationchange', locationchange);
+  iframe.addEventListener('mozbrowserloadend', loadend);
+
+  function waitForAllCallbacks() {
+    if (!seenLoadStart || !seenLoadEnd) {
+      SimpleTest.executeSoon(waitForAllCallbacks);
+      return;
+    }
+
+    iframe.removeEventListener('mozbrowserloadstart', loadstart);
+    iframe.removeEventListener('mozbrowserlocationchange', locationchange);
+    iframe.removeEventListener('mozbrowserloadend', loadend);
+    runTest2();
+  }
+
+  document.body.appendChild(iframe);
+  waitForAllCallbacks();
+}
+
+function runTest2() {
+  var seenLoadStart = false;
+  var seenLoadEnd = false;
+  var seenLocationChange = false;
+
+  // Add this event listener to the document; the events should bubble.
+  document.addEventListener('mozbrowserloadstart', function(e) {
+    ok(e.isTrusted, 'Event should be trusted.');
+    ok(!seenLoadStart, 'Just one loadstart event.');
+    seenLoadStart = true;
+    ok(!seenLoadEnd, 'Got mozbrowserloadstart before loadend.');
+    ok(!seenLocationChange, 'Got mozbrowserloadstart before locationchange.');
+  });
+
+  var iframe = document.getElementById('iframe');
+  iframe.addEventListener('mozbrowserlocationchange', function(e) {
+    ok(e.isTrusted, 'Event should be trusted.');
+    ok(!seenLocationChange, 'Just one locationchange event.');
+    seenLocationChange = true;
+    ok(seenLoadStart, 'Location change after load start.');
+    ok(!seenLoadEnd, 'Location change before load end.');
+    ok(e.detail.url, browserElementTestHelpers.emptyPage2, "event's reported location");
+  });
+
+  iframe.addEventListener('mozbrowserloadend', function(e) {
+    ok(e.isTrusted, 'Event should be trusted.');
+    ok(!seenLoadEnd, 'Just one load end event.');
+    seenLoadEnd = true;
+    ok(seenLoadStart, 'Load end after load start.');
+    ok(seenLocationChange, 'Load end after location change.');
+    is(e.detail.backgroundColor, 'transparent', 'Expected background color reported')
+  });
+
+  iframe.src = browserElementTestHelpers.emptyPage2;
+
+  function waitForAllCallbacks() {
+    if (!seenLoadStart || !seenLoadEnd || !seenLocationChange) {
+      SimpleTest.executeSoon(waitForAllCallbacks);
+      return;
+    }
+
+    SimpleTest.finish();
+  }
+
+  waitForAllCallbacks();
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Manifestchange.js b/dom/browser-element/mochitest/browserElement_Manifestchange.js
new file mode 100644
index 0000000000..22cf8fe7c3
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Manifestchange.js
@@ -0,0 +1,96 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the onmozbrowsermanifestchange event works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function createHtml(manifest) {
+  return 'data:text/html,<html xmlns:xml="http://www.w3.org/XML/1998/namespace"><head>' + manifest + '<body></body></html>';
+}
+
+function createManifest(href) {
+  return '<link rel="manifest" href="' + href + '">';
+}
+
+function runTest() {
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe1);
+
+  // iframe2 is a red herring; we modify its manifest link elements but don't
+  // listen for manifestchanges; we want to make sure that its manifestchange
+  // events aren't picked up by the listener on iframe1.
+  var iframe2 = document.createElement('iframe');
+  iframe2.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe2);
+
+  // iframe3 is another red herring.  It's not a mozbrowser, so we shouldn't
+  // get any manifestchange events on it.
+  var iframe3 = document.createElement('iframe');
+  document.body.appendChild(iframe3);
+
+  var numManifestChanges = 0;
+
+  iframe1.addEventListener('mozbrowsermanifestchange', function(e) {
+
+    numManifestChanges++;
+
+    if (numManifestChanges == 1) {
+      is(e.detail.href, 'manifest.1', 'manifest.1 matches');
+
+      // We should receive manifestchange events when the user creates new
+      // manifests
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.title='New title';",
+                                    /* allowDelayedLoad = */ false);
+
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=manifest href=manifest.2>')",
+                                    /* allowDelayedLoad = */ false);
+
+      SpecialPowers.getBrowserFrameMessageManager(iframe2)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=manifest href=manifest.2>')",
+                                    /* allowDelayedLoad = */ false);
+    }
+    else if (numManifestChanges == 2) {
+      is(e.detail.href, 'manifest.2', 'manifest.2 matches');
+
+      // Full new pages should trigger manifestchange events
+      iframe1.src = createHtml(createManifest('manifest.3'));
+    }
+    else if (numManifestChanges == 3) {
+      is(e.detail.href, 'manifest.3', 'manifest.3 matches');
+
+      // Test setting a page with multiple manifest link elements
+      iframe1.src = createHtml(createManifest('manifest.4a') + createManifest('manifest.4b'));
+    }
+    else if (numManifestChanges == 4) {
+      is(e.detail.href, 'manifest.4a', 'manifest.4a matches');
+      // 2 events will be triggered by previous test, wait for next
+    }
+    else if (numManifestChanges == 5) {
+      is(e.detail.href, 'manifest.4b', 'manifest.4b matches');
+      SimpleTest.finish();
+    } else {
+      ok(false, 'Too many manifestchange events.');
+    }
+  });
+
+  iframe3.addEventListener('mozbrowsermanifestchange', function(e) {
+    ok(false, 'Should not get a manifestchange event for iframe3.');
+  });
+
+
+  iframe1.src = createHtml(createManifest('manifest.1'));
+  // We should not receive manifest change events for either of the below iframes
+  iframe2.src = createHtml(createManifest('manifest.1'));
+  iframe3.src = createHtml(createManifest('manifest.1'));
+
+}
+
+addEventListener('testready', runTest);
+
diff --git a/dom/browser-element/mochitest/browserElement_Metachange.js b/dom/browser-element/mochitest/browserElement_Metachange.js
new file mode 100644
index 0000000000..7789a3e18c
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Metachange.js
@@ -0,0 +1,177 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the onmozbrowsermetachange event works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function createHtml(meta) {
+  return 'data:text/html,<html xmlns:xml="http://www.w3.org/XML/1998/namespace"><head>' + meta + '<body></body></html>';
+}
+
+function createHtmlWithLang(meta, lang) {
+  return 'data:text/html,<html xmlns:xml="http://www.w3.org/XML/1998/namespace" lang="' + lang + '"><head>' + meta + '<body></body></html>';
+}
+
+function createMeta(name, content) {
+  return '<meta name="' + name + '" content="' + content + '">';
+}
+
+function createMetaWithLang(name, content, lang) {
+  return '<meta name="' + name + '" content="' + content + '" lang="' + lang + '">';
+}
+
+function createMetaWithProperty(property, content) {
+  return '<meta property="' + property + '" content="' + content + '">';
+}
+
+function runTest() {
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe1);
+
+  // iframe2 is a red herring; we modify its meta elements but don't listen for
+  // metachanges; we want to make sure that its metachange events aren't
+  // picked up by the listener on iframe1.
+  var iframe2 = document.createElement('iframe');
+  iframe2.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe2);
+
+  // iframe3 is another red herring.  It's not a mozbrowser, so we shouldn't
+  // get any metachange events on it.
+  var iframe3 = document.createElement('iframe');
+  document.body.appendChild(iframe3);
+
+  var numMetaChanges = 0;
+
+  iframe1.addEventListener('mozbrowsermetachange', function(e) {
+
+    numMetaChanges++;
+
+    if (numMetaChanges == 1) {
+      is(e.detail.name, 'application-name');
+      is(e.detail.content, 'foobar');
+
+      // We should recieve metachange events when the user creates new metas
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.title='New title';",
+                                    /* allowDelayedLoad = */ false);
+
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<meta name=application-name content=new_foobar>')",
+                                    /* allowDelayedLoad = */ false);
+
+      SpecialPowers.getBrowserFrameMessageManager(iframe2)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<meta name=application-name content=new_foobar>')",
+                                    /* allowDelayedLoad = */ false);
+    }
+    else if (numMetaChanges == 2) {
+      is(e.detail.name, 'application-name', 'name matches');
+      is(e.detail.content, 'new_foobar', 'content matches');
+      ok(!("lang" in e.detail), 'lang not present');
+
+      // Full new pages should trigger metachange events
+      iframe1.src = createHtml(createMeta('application-name', '3rd_foobar'));
+    }
+    else if (numMetaChanges == 3) {
+      is(e.detail.name, 'application-name', 'name matches');
+      is(e.detail.content, '3rd_foobar', 'content matches');
+      ok(!("lang" in e.detail), 'lang not present');
+
+      // Test setting a page with multiple meta elements
+      iframe1.src = createHtml(createMeta('application-name', 'foobar_1') + createMeta('application-name', 'foobar_2'));
+    }
+    else if (numMetaChanges == 4) {
+      is(e.detail.name, 'application-name', 'name matches');
+      is(e.detail.content, 'foobar_1', 'content matches');
+      ok(!("lang" in e.detail), 'lang not present');
+      // 2 events will be triggered by previous test, wait for next
+    }
+    else if (numMetaChanges == 5) {
+      is(e.detail.name, 'application-name', 'name matches');
+      is(e.detail.content, 'foobar_2', 'content matches');
+      ok(!("lang" in e.detail), 'lang not present');
+
+      // Test the language
+      iframe1.src = createHtml(createMetaWithLang('application-name', 'foobar_lang_1', 'en'));
+    }
+    else if (numMetaChanges == 6) {
+      is(e.detail.name, 'application-name', 'name matches');
+      is(e.detail.content, 'foobar_lang_1', 'content matches');
+      is(e.detail.lang, 'en', 'language matches');
+
+      // Test the language in the ancestor element
+      iframe1.src = createHtmlWithLang(createMeta('application-name', 'foobar_lang_2'), 'es');
+    }
+    else if (numMetaChanges == 7) {
+      is(e.detail.name, 'application-name', 'name matches');
+      is(e.detail.content, 'foobar_lang_2', 'content matches');
+      is(e.detail.lang, 'es', 'language matches');
+
+      // Test the language in the ancestor element
+      iframe1.src = createHtmlWithLang(createMetaWithLang('application-name', 'foobar_lang_3', 'it'), 'fi');
+    }
+    else if (numMetaChanges == 8) {
+      is(e.detail.name, 'application-name', 'name matches');
+      is(e.detail.content, 'foobar_lang_3', 'content matches');
+      is(e.detail.lang, 'it', 'language matches');
+
+      // Test the content-language
+      iframe1.src = "http://test/tests/dom/browser-element/mochitest/file_browserElement_Metachange.sjs?ru";
+    }
+    else if (numMetaChanges == 9) {
+      is(e.detail.name, 'application-name', 'name matches');
+      is(e.detail.content, 'sjs', 'content matches');
+      is(e.detail.lang, 'ru', 'language matches');
+
+      // Test the content-language
+      iframe1.src = "http://test/tests/dom/browser-element/mochitest/file_browserElement_Metachange.sjs?ru|dk";
+    }
+    else if (numMetaChanges == 10) {
+      is(e.detail.name, 'application-name', 'name matches');
+      is(e.detail.content, 'sjs', 'content matches');
+      is(e.detail.lang, 'dk', 'language matches');
+
+      // Test Open Graph property
+      iframe1.src = createHtml(createMetaWithProperty('og:description', 'Fascinating article'));
+
+      // We should not get event if property doesn't start with 'og:'
+      iframe3.src = createHtml(createMetaWithProperty('go:description', 'Fascinating article'));
+    }
+    else if (numMetaChanges == 11) {
+      is(e.detail.name, 'og:description', 'property name matches');
+      is(e.detail.content, 'Fascinating article', 'content matches');
+
+      // Sometimes 'name' is used instead of 'property'. Verify that works.
+      iframe1.src = createHtml(createMeta('og:title', 'One weird trick!'));
+
+      // We should not get event if property doesn't start with 'og:'
+      iframe3.src = createHtml(createMeta('go:title', 'One weird trick!'));
+    }
+    else if (numMetaChanges == 12) {
+      is(e.detail.name, 'og:title', 'property name matches');
+      is(e.detail.content, 'One weird trick!', 'content matches');
+
+      // Test the language
+      SimpleTest.finish();
+    } else {
+      ok(false, 'Too many metachange events.');
+    }
+  });
+
+  iframe3.addEventListener('mozbrowsermetachange', function(e) {
+    ok(false, 'Should not get a metachange event for iframe3.');
+  });
+
+
+  iframe1.src = createHtml(createMeta('application-name', 'foobar'));
+  // We should not recieve meta change events for either of the below iframes
+  iframe2.src = createHtml(createMeta('application-name', 'foobar'));
+  iframe3.src = createHtml(createMeta('application-name', 'foobar'));
+
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_NextPaint.js b/dom/browser-element/mochitest/browserElement_NextPaint.js
new file mode 100644
index 0000000000..749a8efe3c
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_NextPaint.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 808231 - Add mozbrowsernextpaint event.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  // Add a first listener that we'll remove shortly after.
+  iframe.addNextPaintListener(wrongListener);
+
+  var gotFirstNextPaintEvent = false;
+  iframe.addNextPaintListener(function () {
+    ok(!gotFirstNextPaintEvent, 'got the first nextpaint event');
+
+    // Make sure we're only called once.
+    gotFirstNextPaintEvent = true;
+
+    iframe.addNextPaintListener(function () {
+      info('got the second nextpaint event');
+      SimpleTest.finish();
+    });
+
+    // Force the iframe to repaint.
+    SimpleTest.executeSoon(() => iframe.src += '#next');
+  });
+
+  // Remove the first listener to make sure it's not called.
+  iframe.removeNextPaintListener(wrongListener);
+  iframe.src = 'file_browserElement_NextPaint.html';
+}
+
+function wrongListener() {
+  ok(false, 'first listener should have been removed');
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_NoAudioTrack.js b/dom/browser-element/mochitest/browserElement_NoAudioTrack.js
new file mode 100644
index 0000000000..47f0fd5244
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_NoAudioTrack.js
@@ -0,0 +1,96 @@
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var fileURL = 'chrome://mochitests/content/chrome/dom/browser-element/mochitest/file_browserElement_NoAudioTrack.html';
+var generator = runTests();
+var testFrame;
+
+function alertListener(e) {
+  var message = e.detail.message;
+  if (/^OK/.exec(message)) {
+    ok(true, "Message from file : " + message);
+    continueTest();
+  } else if (/^KO/.exec(message)) {
+    error(message);
+  } else {
+    error("Undefined event.");
+  }
+}
+
+function error(aMessage) {
+  ok(false, "Error : " + aMessage);
+  finish();
+}
+
+function continueTest() {
+  try {
+    generator.next();
+  } catch (e if e instanceof StopIteration) {
+    error("Stop test because of exception!");
+  }
+}
+
+function finish() {
+  testFrame.removeEventListener('mozbrowsershowmodalprompt', alertListener);
+  ok(true, "Remove event-listener.");
+  document.body.removeChild(testFrame);
+  ok(true, "Remove test-frame from document.");
+  SimpleTest.finish();
+}
+
+function setCommand(aArg) {
+  info("# Command = " + aArg);
+  testFrame.src = fileURL + '#' + aArg;
+}
+
+function runTests() {
+  setCommand('play');
+  yield undefined;
+
+  // wait a second to make sure that onactivestatechanged isn't dispatched.
+  setCommand('idle');
+  yield undefined;
+
+  finish();
+  yield undefined;
+}
+
+function setupTestFrame() {
+  testFrame = document.createElement('iframe');
+  testFrame.setAttribute('mozbrowser', 'true');
+  testFrame.src = fileURL;
+
+  function loadend() {
+    testFrame.removeEventListener('mozbrowserloadend', loadend);
+    ok("allowedAudioChannels" in testFrame, "allowedAudioChannels exist");
+    var channels = testFrame.allowedAudioChannels;
+    is(channels.length, 9, "9 audio channel by default");
+
+    var ac = channels[0];
+    ok(ac instanceof BrowserElementAudioChannel, "Correct class");
+    ok("onactivestatechanged" in ac, "onactivestatechanged exists");
+
+    ac.onactivestatechanged = () => {
+      ac.onactivestatechanged = null;
+      ok(true, "Should receive onactivestatechanged!");
+    };
+
+    continueTest();
+  }
+
+  testFrame.addEventListener('mozbrowserloadend', loadend);
+  testFrame.addEventListener('mozbrowsershowmodalprompt', alertListener);
+  ok(true, "Add event-listeners.");
+
+  document.body.appendChild(testFrame);
+  ok(true, "Append test-frame to document.");
+}
+
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set': [["b2g.system_startup_url", window.location.href]]},
+                            function() {
+    SimpleTest.executeSoon(setupTestFrame);
+  });
+});
diff --git a/dom/browser-element/mochitest/browserElement_OpenMixedProcess.js b/dom/browser-element/mochitest/browserElement_OpenMixedProcess.js
new file mode 100644
index 0000000000..c5cde7f50c
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_OpenMixedProcess.js
@@ -0,0 +1,105 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 776129 - If a window w calls window.open, the resultant window should be
+// remote iff w is remote.
+//
+// <iframe mozbrowser> can be default-OOP or default-in-process.  But we can
+// override this default by setting remote=true or remote=false on the iframe.
+//
+// This bug arises when we are default-in-process and a OOP iframe calls
+// window.open, or when we're default-OOP and an in-process iframe calls
+// window.open.  In either case, if the opened iframe gets the default
+// remotness, it will not match its opener's remoteness, which is bad.
+//
+// Since the name of the test determines the OOP-by-default pref, the "inproc"
+// version of this test opens an OOP frame, and the "oop" version opens an
+// in-process frame.  Enjoy.  :)
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTest() {
+  // We're going to open a remote frame if OOP off by default.  If OOP is on by
+  // default, we're going to open an in-process frame.
+  var remote = !browserElementTestHelpers.getOOPByDefaultPref();
+
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  iframe.setAttribute('remote', remote);
+
+  // The page we load does window.open, then checks some things and reports
+  // back using alert().  Finally, it calls alert('finish').
+  //
+  // Bug 776129 in particular manifests itself such that the popup frame loads
+  // and the tests in file_browserElement_OpenMixedProcess pass, but the
+  // content of the frame is invisible.  To catch this case, we take a
+  // screenshot after we load the content into the popup, and ensure that it's
+  // not blank.
+  var popup;
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    popup = document.body.appendChild(e.detail.frameElement);
+  });
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    if (e.detail.message.startsWith('pass')) {
+      ok(true, e.detail.message);
+    }
+    else if (e.detail.message.startsWith('fail')) {
+      ok(false, e.detail.message);
+    }
+    else if (e.detail.message == 'finish') {
+      // We assume here that iframe is completely blank, and spin until popup's
+      // screenshot is not the same as iframe.
+      iframe.getScreenshot(1000, 1000).onsuccess = function(e) {
+        var fr = new FileReader();
+        fr.onloadend = function() { test2(popup, fr.result); };
+        fr.readAsArrayBuffer(e.target.result);
+      };
+    }
+    else {
+      ok(false, e.detail.message, "Unexpected message!");
+    }
+  });
+
+  document.body.appendChild(iframe);
+  iframe.src = 'file_browserElement_OpenMixedProcess.html';
+}
+
+function arrayBuffersEqual(a, b) {
+  var x = new Int8Array(a);
+  var y = new Int8Array(b);
+  if (x.length != y.length) {
+    return false;
+  }
+
+  for (var i = 0; i < x.length; i++) {
+    if (x[i] != y[i]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function test2(popup, blankScreenshotArrayBuffer) {
+  // Take screenshots of popup until it doesn't equal blankScreenshot (or we
+  // time out).
+  popup.getScreenshot(1000, 1000).onsuccess = function(e) {
+    var fr = new FileReader();
+    fr.onloadend = function() {
+      if (!arrayBuffersEqual(blankScreenshotArrayBuffer, fr.result)) {
+        ok(true, "Finally got a non-blank screenshot.");
+        SimpleTest.finish();
+        return;
+      }
+
+      SimpleTest.executeSoon(function() { test2(popup, blankScreenshot) });
+    };
+    fr.readAsArrayBuffer(e.target.result);
+  };
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_OpenNamed.js b/dom/browser-element/mochitest/browserElement_OpenNamed.js
new file mode 100644
index 0000000000..aed5617e92
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_OpenNamed.js
@@ -0,0 +1,57 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 742944 - In <iframe mozbrowser>, test that if we call window.open twice
+// with the same name, we get only one mozbrowseropenwindow event.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+var iframe;
+var popupFrame;
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  var gotPopup = false;
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    is(gotPopup, false, 'Should get just one popup.');
+    gotPopup = true;
+    popupFrame = e.detail.frameElement;
+    is(popupFrame.getAttribute('name'), 'OpenNamed');
+
+    // Called when file_browserElement_OpenNamed2.html loads into popupFrame.
+    popupFrame.addEventListener('mozbrowsershowmodalprompt', function promptlistener(e) {
+      popupFrame.removeEventListener('mozbrowsershowmodalprompt', promptlistener);
+
+      ok(gotPopup, 'Got openwindow event before showmodalprompt event.');
+      is(e.detail.message, 'success: loaded');
+      SimpleTest.executeSoon(test2);
+    });
+
+    document.body.appendChild(popupFrame);
+  });
+
+  // OpenNamed.html will call
+  //
+  //    window.open('file_browserElement_OpenNamed2.html', 'OpenNamed').
+  //
+  // Once that popup loads, we reload OpenNamed.html.  That will call
+  // window.open again, but we shouldn't get another openwindow event, because
+  // we're opening into the same named window.
+  iframe.src = 'file_browserElement_OpenNamed.html';
+  document.body.appendChild(iframe);
+}
+
+function test2() {
+  popupFrame.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    is(e.detail.message, 'success: loaded');
+    SimpleTest.finish();
+  });
+
+  iframe.src = 'file_browserElement_OpenNamed.html?test2';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_OpenTab.js b/dom/browser-element/mochitest/browserElement_OpenTab.js
new file mode 100644
index 0000000000..d01927e9b2
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_OpenTab.js
@@ -0,0 +1,69 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 1144015 - test middle/ctrl/cmd-click on a link.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  let iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  let x = 2;
+  let y = 2;
+  // First we force a reflow so that getChildProcessOffset actually returns
+  // meaningful data.
+  iframe.getBoundingClientRect();
+  // We need to make sure the event coordinates are actually inside the iframe,
+  // relative to the chome window.
+  let tabParent = SpecialPowers.wrap(iframe)
+                  .QueryInterface(SpecialPowers.Ci.nsIFrameLoaderOwner)
+                  .frameLoader.tabParent;
+  if (tabParent) {
+    let offsetX = {};
+    let offsetY = {};
+    tabParent.getChildProcessOffset(offsetX, offsetY);
+    x -= offsetX.value;
+    y -= offsetY.value;
+  }
+
+  let sendCtrlClick = () => {
+    let nsIDOMWindowUtils = SpecialPowers.Ci.nsIDOMWindowUtils;
+    let mod = nsIDOMWindowUtils.MODIFIER_META |
+              nsIDOMWindowUtils.MODIFIER_CONTROL;
+    iframe.sendMouseEvent('mousedown', x, y, 0, 1, mod);
+    iframe.sendMouseEvent('mouseup', x, y, 0, 1, mod);
+  }
+
+  let onCtrlClick = e => {
+    is(e.detail.url, 'http://example.com/', 'URL matches');
+    iframe.removeEventListener('mozbrowseropentab', onCtrlClick);
+    iframe.addEventListener('mozbrowseropentab', onMiddleClick);
+    sendMiddleClick();
+  }
+
+  let sendMiddleClick = () => {
+    iframe.sendMouseEvent('mousedown', x, y, 1, 1, 0);
+    iframe.sendMouseEvent('mouseup', x, y, 1, 1, 0);
+  }
+
+  let onMiddleClick = e => {
+    is(e.detail.url, 'http://example.com/', 'URL matches');
+    iframe.removeEventListener('mozbrowseropentab', onMiddleClick);
+    SimpleTest.finish();
+  }
+
+  iframe.addEventListener('mozbrowserloadend', e => {
+    iframe.addEventListener('mozbrowseropentab', onCtrlClick);
+    sendCtrlClick();
+  });
+
+
+  iframe.src = 'data:text/html,<body style="margin:0"><a href="http://example.com"><span>click here</span></a></body>';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_OpenWindow.js b/dom/browser-element/mochitest/browserElement_OpenWindow.js
new file mode 100644
index 0000000000..65de11a261
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_OpenWindow.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 742944 - Test that window.open works with <iframe mozbrowser>.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  var gotPopup = false;
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    is(gotPopup, false, 'Should get just one popup.');
+    gotPopup = true;
+
+    document.body.appendChild(e.detail.frameElement);
+
+    ok(/file_browserElement_Open2\.html$/.test(e.detail.url),
+       "Popup's URL (got " + e.detail.url + ")");
+    is(e.detail.name, "name");
+    is(e.detail.features, "dialog=1");
+  });
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    ok(gotPopup, 'Got mozbrowseropenwindow event before showmodalprompt event.');
+    if (e.detail.message.indexOf("success:") == 0) {
+      ok(true, e.detail.message);
+    }
+    else if (e.detail.message.indexOf("failure:") == 0) {
+      ok(false, e.detail.message);
+    }
+    else if (e.detail.message == "finish") {
+      SimpleTest.finish();
+    }
+    else {
+      ok(false, "Got invalid message: " + e.detail.message);
+    }
+  });
+
+  /**
+   * file_browserElementOpen1 does
+   *
+   *   window.open('file_browserElement_Open2.html', 'name', 'dialog=1')
+   *
+   * then adds an event listener to the opened window and waits for onload.
+   *
+   * Onload, we fire a few alerts saying "success:REASON" or "failure:REASON".
+   * Finally, we fire a "finish" alert, which ends the test.
+   */
+  iframe.src = 'file_browserElement_Open1.html';
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_OpenWindowDifferentOrigin.js b/dom/browser-element/mochitest/browserElement_OpenWindowDifferentOrigin.js
new file mode 100644
index 0000000000..650ef17f58
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_OpenWindowDifferentOrigin.js
@@ -0,0 +1,41 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 769182 - window.open to a different origin should load the page.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    ok(true, 'Got first window.open call');
+
+    e.detail.frameElement.addEventListener('mozbrowseropenwindow', function(e) {
+      ok(true, 'Got second window.open call');
+      document.body.appendChild(e.detail.frameElement);
+    });
+
+    e.detail.frameElement.addEventListener('mozbrowsershowmodalprompt', function(e) {
+      ok(true, 'Got alert from second window.');
+      SimpleTest.finish();
+    });
+
+    document.body.appendChild(e.detail.frameElement);
+  });
+
+  // DifferentOrigin.html?1 calls
+  //
+  //   window.open('http://example.com/.../DifferentOrigin.html?2'),
+  //
+  // which calls alert().
+
+  iframe.src = 'http://example.org/tests/dom/browser-element/mochitest/file_browserElement_OpenWindowDifferentOrigin.html?1';
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_OpenWindowEmpty.js b/dom/browser-element/mochitest/browserElement_OpenWindowEmpty.js
new file mode 100644
index 0000000000..6b8dd0340b
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_OpenWindowEmpty.js
@@ -0,0 +1,31 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 1216937 - Test that window.open with null/empty URL should use
+// about:blank as default
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  var gotPopup = false;
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    is(gotPopup, false, 'Should get just one popup.');
+    gotPopup = true;
+
+    is(e.detail.url, 'about:blank', "Popup's has correct URL");
+    e.preventDefault();
+
+    SimpleTest.finish();
+  });
+
+  iframe.src = 'file_browserElement_OpenWindowEmpty.html';
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_OpenWindowInFrame.js b/dom/browser-element/mochitest/browserElement_OpenWindowInFrame.js
new file mode 100644
index 0000000000..5559bbcb8c
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_OpenWindowInFrame.js
@@ -0,0 +1,65 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 766871 - Test that window.open works from an <iframe> within <iframe mozbrowser>.
+//
+// This is basically the same as browserElement_OpenWindow, except that instead
+// of loading file_browserElement_Open1.html directly inside the <iframe
+// mozbrowser>, we load file_browserElement_OpenWindowInFrame.html into the
+// mozbrowser.  OpenWindowInFrame loads file_browserElement_Open1.html inside
+// an iframe.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  var gotPopup = false;
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    is(gotPopup, false, 'Should get just one popup.');
+    gotPopup = true;
+
+    document.body.appendChild(e.detail.frameElement);
+
+    ok(/file_browserElement_Open2\.html$/.test(e.detail.url),
+       "Popup's URL (got " + e.detail.url + ")");
+    is(e.detail.name, "name");
+    is(e.detail.features, "dialog=1");
+  });
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    ok(gotPopup, 'Got mozbrowseropenwindow event before showmodalprompt event.');
+    if (e.detail.message.indexOf("success:") == 0) {
+      ok(true, e.detail.message);
+    }
+    else if (e.detail.message.indexOf("failure:") == 0) {
+      ok(false, e.detail.message);
+    }
+    else if (e.detail.message == "finish") {
+      SimpleTest.finish();
+    }
+    else {
+      ok(false, "Got invalid message: " + e.detail.message);
+    }
+  });
+
+  /**
+   * file_browserElement_OpenWindowInFrame.html loads
+   * file_browserElement_Open1.html in an iframe.  Open1.html does
+   *
+   *   window.open('file_browserElement_Open2.html', 'name', 'dialog=1')
+   *
+   * then adds an event listener to the opened window and waits for onload.
+   *
+   * Onload, we fire a few alerts saying "success:REASON" or "failure:REASON".
+   * Finally, we fire a "finish" alert, which ends the test.
+   */
+  iframe.src = 'file_browserElement_OpenWindowInFrame.html';
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_OpenWindowRejected.js b/dom/browser-element/mochitest/browserElement_OpenWindowRejected.js
new file mode 100644
index 0000000000..f5ef97260f
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_OpenWindowRejected.js
@@ -0,0 +1,44 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 742944 - Do window.open from inside <iframe mozbrowser>.  But then
+// reject the call.  This shouldn't cause problems (crashes, leaks).
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    ok(e.detail.url.indexOf('does_not_exist.html') != -1,
+       'Opened URL; got ' + e.detail.url);
+    is(e.detail.name, '');
+    is(e.detail.features, '');
+
+    // Don't add e.detail.frameElement to the DOM, so the window.open is
+    // effectively blocked.
+    e.preventDefault();
+  });
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    var msg = e.detail.message;
+    if (msg.indexOf('success:') == 0) {
+      ok(true, msg);
+    }
+    else if (msg == 'finish') {
+      SimpleTest.finish();
+    }
+    else {
+      ok(false, msg);
+    }
+  });
+
+  iframe.src = 'file_browserElement_OpenWindowRejected.html';
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_OpenWindowRejected2.js b/dom/browser-element/mochitest/browserElement_OpenWindowRejected2.js
new file mode 100644
index 0000000000..acea6813e4
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_OpenWindowRejected2.js
@@ -0,0 +1,47 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 742944 - Do window.open from inside <iframe mozbrowser>.  But then
+// reject the call.  This shouldn't cause problems (crashes, leaks).
+//
+// This is the same as OpenWindowRejected, except we "reject" the popup by not
+// adding the iframe element to our DOM, instead of by not calling
+// preventDefault() on the event.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    ok(e.detail.url.indexOf('does_not_exist.html') != -1,
+       'Opened URL; got ' + e.detail.url);
+    is(e.detail.name, '');
+    is(e.detail.features, '');
+
+    // Call preventDefault, but don't add the iframe to the DOM.  This still
+    // amounts to rejecting the popup.
+    e.preventDefault();
+  });
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    var msg = e.detail.message;
+    if (msg.indexOf('success:') == 0) {
+      ok(true, msg);
+    }
+    else if (msg == 'finish') {
+      SimpleTest.finish();
+    }
+    else {
+      ok(false, msg);
+    }
+  });
+
+  iframe.src = 'file_browserElement_OpenWindowRejected.html';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Opensearch.js b/dom/browser-element/mochitest/browserElement_Opensearch.js
new file mode 100644
index 0000000000..8df44d2a9e
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Opensearch.js
@@ -0,0 +1,109 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the onmozbrowseropensearch event works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function createHtml(link) {
+  return 'data:text/html,<html><head>' + link + '<body></body></html>';
+}
+
+function createLink(name) {
+  return '<link rel="search" title="Test OpenSearch" type="application/opensearchdescription+xml" href="http://example.com/' + name + '.xml">';
+}
+
+function runTest() {
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe1);
+
+  // iframe2 is a red herring; we modify its link but don't listen for
+  // opensearch; we want to make sure that its opensearch events aren't
+  // picked up by the listener on iframe1.
+  var iframe2 = document.createElement('iframe');
+  iframe2.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe2);
+
+  // iframe3 is another red herring.  It's not a mozbrowser, so we shouldn't
+  // get any opensearch events on it.
+  var iframe3 = document.createElement('iframe');
+  document.body.appendChild(iframe3);
+
+  var numLinkChanges = 0;
+
+  iframe1.addEventListener('mozbrowseropensearch', function(e) {
+
+    numLinkChanges++;
+
+    if (numLinkChanges == 1) {
+      is(e.detail.title, 'Test OpenSearch');
+      is(e.detail.href, 'http://example.com/mysearch.xml');
+
+      // We should recieve opensearch events when the user creates new links
+      // to a search engine, but only when we listen for them
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.title='New title';",
+                                    /* allowDelayedLoad = */ false);
+
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=SEARCH type=application/opensearchdescription+xml href=http://example.com/newsearch.xml>')",
+                                    /* allowDelayedLoad = */ false);
+
+      SpecialPowers.getBrowserFrameMessageManager(iframe2)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=SEARCH type=application/opensearchdescription+xml href=http://example.com/newsearch.xml>')",
+                                    /* allowDelayedLoad = */ false);
+    }
+    else if (numLinkChanges == 2) {
+      is(e.detail.href, 'http://example.com/newsearch.xml');
+
+      // Full new pages should trigger opensearch events
+      iframe1.src = createHtml(createLink('3rdsearch'));
+    }
+    else if (numLinkChanges == 3) {
+      is(e.detail.href, 'http://example.com/3rdsearch.xml');
+
+      // the rel attribute can have various space seperated values, make
+      // sure we only pick up correct values for 'opensearch'
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=someopensearch type=application/opensearchdescription+xml href=http://example.com/newsearch.xml>')",
+                                    /* allowDelayedLoad = */ false);
+      // Test setting a page with multiple links elements
+      iframe1.src = createHtml(createLink('another') + createLink('search'));
+    }
+    else if (numLinkChanges == 4) {
+      is(e.detail.href, 'http://example.com/another.xml');
+      // 2 events will be triggered by previous test, wait for next
+    }
+    else if (numLinkChanges == 5) {
+      is(e.detail.href, 'http://example.com/search.xml');
+
+      // Make sure opensearch check is case insensitive
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.head.insertAdjacentHTML('beforeend', '<link rel=SEARCH type=application/opensearchdescription+xml href=http://example.com/ucasesearch.xml>')",
+                                    /* allowDelayedLoad = */ false);
+    }
+    else if (numLinkChanges == 6) {
+      is(e.detail.href, 'http://example.com/ucasesearch.xml');
+      SimpleTest.finish();
+    } else {
+      ok(false, 'Too many opensearch events.');
+    }
+  });
+
+  iframe3.addEventListener('mozbrowseropensearch', function(e) {
+    ok(false, 'Should not get a opensearch event for iframe3.');
+  });
+
+
+  iframe1.src = createHtml(createLink('mysearch'));
+  // We should not recieve opensearch change events for either of the below iframes
+  iframe2.src = createHtml(createLink('mysearch'));
+  iframe3.src = createHtml(createLink('mysearch'));
+
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_PrivateBrowsing.js b/dom/browser-element/mochitest/browserElement_PrivateBrowsing.js
new file mode 100644
index 0000000000..c32edcc37c
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_PrivateBrowsing.js
@@ -0,0 +1,49 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the mozprivatebrowsing attribute works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function createFrame(aIsPrivate) {
+  var iframe = document.createElement("iframe");
+  iframe.setAttribute('mozbrowser', 'true');
+  if (aIsPrivate) {
+    iframe.setAttribute("mozprivatebrowsing", "true");
+  }
+  return iframe;
+}
+
+function createTest(aIsPrivate, aExpected, aClearStorage) {
+  info("createTest " + aIsPrivate + " " + aExpected);
+  return new Promise(function(resolve, reject) {
+    var iframe = createFrame(aIsPrivate);
+    document.body.appendChild(iframe);
+
+    iframe.addEventListener("mozbrowsershowmodalprompt", function(e) {
+      is(e.detail.message, aExpected, "Checking localstorage");
+      resolve();
+    });
+
+    var src = "file_browserElement_PrivateBrowsing.html";
+    iframe.src = aClearStorage ? src + "?clear=true" : src;
+
+  });
+}
+
+function runTest() {
+  // We first create a iframe in non private browsing mode, set up some
+  // localstorage, reopen it to check that we get the previously set value.
+  // Finally, open it in private browsing mode and check that localstorage
+  // is clear.
+  createTest(false, "CLEAR", true)
+  .then(() => { return createTest(false, "EMPTY", false); })
+  .then(() => { return createTest(false, "bar", false); })
+  .then(() => { return createTest(true, "EMPTY", false); })
+  .then(SimpleTest.finish);
+}
+
+addEventListener("testready", runTest);
diff --git a/dom/browser-element/mochitest/browserElement_PromptCheck.js b/dom/browser-element/mochitest/browserElement_PromptCheck.js
new file mode 100644
index 0000000000..d6edde09f2
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_PromptCheck.js
@@ -0,0 +1,59 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that alertCheck (i.e., alert with the opportunity to opt out of future
+// alerts), promptCheck, and confirmCheck work.  We do this by spamming
+// alerts/prompts/confirms from inside an <iframe mozbrowser>.
+//
+// At the moment, we treat alertCheck/promptCheck/confirmCheck just like a
+// normal alert.  But it's different to nsIPrompt!
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest()
+{
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  var numPrompts = 0;
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    is(e.detail.message, String(numPrompts), "prompt message");
+    if (numPrompts / 10 < 1) {
+      is(e.detail.promptType, 'alert');
+    }
+    else if (numPrompts / 10 < 2) {
+      is(e.detail.promptType, 'confirm');
+    }
+    else {
+      is(e.detail.promptType, 'prompt');
+    }
+
+    numPrompts++;
+    if (numPrompts == 30) {
+      SimpleTest.finish();
+    }
+  });
+
+  iframe.src =
+    'data:text/html,<html><body><script>\
+      addEventListener("load", function() { \
+       setTimeout(function() { \
+        var i = 0; \
+        for (; i < 10; i++) { alert(i); } \
+        for (; i < 20; i++) { confirm(i); } \
+        for (; i < 30; i++) { prompt(i); } \
+       }); \
+     }); \
+     </scr' + 'ipt></body></html>';
+}
+
+// The test harness sets dom.successive_dialog_time_limit to 0 for some bizarre
+// reason.  That's not normal usage, and it keeps us from testing alertCheck!
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set': [['dom.successive_dialog_time_limit', 10]]}, runTest);
+});
diff --git a/dom/browser-element/mochitest/browserElement_PromptConfirm.js b/dom/browser-element/mochitest/browserElement_PromptConfirm.js
new file mode 100644
index 0000000000..c01836a251
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_PromptConfirm.js
@@ -0,0 +1,87 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that prompt and confirm work.  In particular, we're concerned that we
+// get correct return values out of them.
+//
+// We use alert() to communicate the return values of prompt/confirm back to
+// ourselves.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  var prompts = [
+    {msg: '1', type: 'alert', rv: 42, expected: 'undefined'},
+    {msg: '2', type: 'confirm', rv: true, expected: 'true'},
+    {msg: '3', type: 'confirm', rv: false, expected: 'false'},
+
+    // rv == 42 should be coerced to 'true' for confirm.
+    {msg: '4', type: 'confirm', rv: 42, expected: 'true'},
+    {msg: '5', type: 'prompt', rv: 'worked', expected: 'worked'},
+    {msg: '6', type: 'prompt', rv: null, expected: 'null'},
+    {msg: '7', type: 'prompt', rv: '', expected: ''}
+  ];
+
+  iframe.addEventListener("mozbrowsershowmodalprompt", function(e) {
+    var curPrompt = prompts[0];
+    if (!curPrompt.waitingForResponse) {
+      curPrompt.waitingForResponse = true;
+
+      is(e.detail.message, curPrompt.msg, "prompt message");
+      is(e.detail.promptType, curPrompt.type, "prompt type");
+
+      if (e.detail.promptType == 'prompt') {
+        ok(e.detail.returnValue === null, "prompt's returnValue should be null");
+        is(e.detail.initialValue, "initial", "prompt's initial value.");
+      }
+      else {
+        ok(e.detail.returnValue === undefined,
+           "Other than for prompt, shouldn't have initial value.");
+      }
+
+      // Block the child until we call e.detail.unblock().
+      e.preventDefault();
+
+      SimpleTest.executeSoon(function() {
+        e.detail.returnValue = curPrompt.rv;
+        e.detail.unblock();
+      });
+    }
+    else {
+      prompts.shift();
+
+      // |e| now corresponds to an alert() containing the return value we just
+      // sent for this prompt.
+
+      is(e.detail.message, 'RESULT:' + curPrompt.expected,
+         "expected rv for msg " + curPrompt.msg);
+
+      if (prompts.length == 0) {
+        SimpleTest.finish();
+      }
+    }
+  });
+
+  iframe.src =
+    'data:text/html,<html><body><script>\
+      function sendVal(val) { \
+        alert("RESULT:" + val); \
+      } \
+      sendVal(alert("1")); \
+      sendVal(confirm("2")); \
+      sendVal(confirm("3")); \
+      sendVal(confirm("4")); \
+      sendVal(prompt("5", "initial")); \
+      sendVal(prompt("6", "initial")); \
+      sendVal(prompt("7", "initial")); \
+    </scr' + 'ipt></body></html>';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Proxy.js b/dom/browser-element/mochitest/browserElement_Proxy.js
new file mode 100644
index 0000000000..227b40c5f4
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Proxy.js
@@ -0,0 +1,163 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  let frameUrl = SimpleTest.getTestFileURL('/file_empty.html');
+  SpecialPowers.pushPermissions([{
+    type: 'browser:embedded-system-app',
+    allow: true,
+    context: {
+      url: frameUrl,
+      originAttributes: {
+        inIsolatedMozBrowser: true
+      }
+    }
+  },{
+    type: 'browser',
+    allow: true,
+    context: {
+      url: frameUrl,
+      originAttributes: {
+        inIsolatedMozBrowser: true
+      }
+    }
+  }], createFrame);
+}
+
+var frame;
+var mm;
+
+function createFrame() {
+  let loadEnd = function() {
+    // The frame script running in the frame where the input is hosted.
+    let appFrameScript = function appFrameScript() {
+      let i = 1;
+
+      addMessageListener('test:next', function() {
+        try {
+          switch (i) {
+            case 1:
+              content.document.addEventListener(
+                'visibilitychange', function fn() {
+                content.document.removeEventListener('visibilitychange', fn);
+                sendAsyncMessage('test:done', {
+                  ok: true,
+                  msg: 'setVisible()'
+                });
+              });
+
+              // Test a no return method
+              content.navigator.mozBrowserElementProxy.setVisible(false);
+
+              break;
+            case 2:
+              // Test a DOMRequest method
+              var req = content.navigator.mozBrowserElementProxy.getVisible();
+              req.onsuccess = function() {
+                sendAsyncMessage('test:done', {
+                  ok: true,
+                  msg: 'getVisible()'
+                });
+              };
+
+              req.onerror = function() {
+                sendAsyncMessage('test:done', {
+                  ok: false,
+                  msg: 'getVisible() DOMRequest return error.'
+                });
+              };
+
+              break;
+            case 3:
+              // Test an unimplemented method
+              try {
+                content.navigator.mozBrowserElementProxy.getActive();
+                sendAsyncMessage('test:done', {
+                  ok: false,
+                  msg: 'getActive() should throw.'
+                });
+
+              } catch (e) {
+                sendAsyncMessage('test:done', {
+                  ok: true,
+                  msg: 'getActive() throws.'
+                });
+              }
+
+              break;
+            case 4:
+              content.navigator.mozBrowserElementProxy
+              .addEventListener(
+                'mozbrowserlocationchange',
+                function() {
+                  content.navigator.mozBrowserElementProxy
+                    .onmozbrowserlocationchange = null;
+
+                  sendAsyncMessage('test:done', {
+                    ok: true,
+                    msg: 'mozbrowserlocationchange'
+                  });
+              });
+
+              // Test event
+              content.location.hash = '#foo';
+
+              break;
+          }
+        } catch (e) {
+          sendAsyncMessage('test:done', {
+            ok: false, msg: 'thrown: ' + e.toString() });
+        }
+
+        i++;
+      });
+
+      sendAsyncMessage('test:done', {});
+    }
+
+    mm = SpecialPowers.getBrowserFrameMessageManager(frame);
+    mm.loadFrameScript('data:,(' + encodeURIComponent(appFrameScript.toString()) + ')();', false);
+    mm.addMessageListener("test:done", next);
+  };
+
+  frame = document.createElement('iframe');
+  frame.setAttribute('mozbrowser', 'true');
+  frame.src = 'file_empty.html';
+  document.body.appendChild(frame);
+  frame.addEventListener('mozbrowserloadend', loadEnd);
+}
+
+var i = 0;
+function next(msg) {
+  let wrappedMsg = SpecialPowers.wrap(msg);
+  let isOK = wrappedMsg.data.ok;
+  let msgString = wrappedMsg.data.msg;
+
+  switch (i) {
+    case 0:
+      mm.sendAsyncMessage('test:next');
+      break;
+
+    case 1:
+    case 2:
+    case 3:
+      ok(isOK, msgString);
+      mm.sendAsyncMessage('test:next');
+      break;
+
+    case 4:
+      ok(isOK, msgString);
+      SimpleTest.finish();
+      break;
+  }
+
+  i++;
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_PurgeHistory.js b/dom/browser-element/mochitest/browserElement_PurgeHistory.js
new file mode 100644
index 0000000000..4815f03e7e
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_PurgeHistory.js
@@ -0,0 +1,87 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 807056 - [Browser] Clear History doesn't clear back/forward history in open tabs
+// <iframe mozbrowser>.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframe;
+function addOneShotIframeEventListener(event, fn) {
+  function wrapper(e) {
+    iframe.removeEventListener(event, wrapper);
+    fn(e);
+  };
+
+  iframe.addEventListener(event, wrapper);
+}
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  // FIXME: Bug 1270790
+  iframe.setAttribute('remote', 'true');
+
+  addOneShotIframeEventListener('mozbrowserloadend', function() {
+    SimpleTest.executeSoon(test2);
+  });
+
+  iframe.src = browserElementTestHelpers.emptyPage1;
+  document.body.appendChild(iframe);
+}
+
+function purgeHistory(nextTest) {
+  var seenCanGoBackResult = false;
+  var seenCanGoForwardResult = false;
+
+  iframe.purgeHistory().onsuccess = function(e) {
+    ok(true, "The history has been purged");
+
+    iframe.getCanGoBack().onsuccess = function(e) {
+      is(e.target.result, false, "Iframe cannot go back");
+      seenCanGoBackResult = true;
+      maybeRunNextTest();
+    };
+
+    iframe.getCanGoForward().onsuccess = function(e) {
+      is(e.target.result, false, "Iframe cannot go forward");
+      seenCanGoForwardResult = true;
+      maybeRunNextTest();
+    };
+  };
+
+  function maybeRunNextTest() {
+    if (seenCanGoBackResult && seenCanGoForwardResult) {
+      nextTest();
+    }
+  }
+}
+
+function test2() {
+  purgeHistory(test3);
+}
+
+function test3() {
+  addOneShotIframeEventListener('mozbrowserloadend', function() {
+    purgeHistory(test4);
+  });
+
+  SimpleTest.executeSoon(function() {
+    iframe.src = browserElementTestHelpers.emptyPage2;
+  });
+}
+
+function test4() {
+  addOneShotIframeEventListener('mozbrowserlocationchange', function(e) {
+    is(e.detail.url, browserElementTestHelpers.emptyPage3);
+    purgeHistory(SimpleTest.finish);
+  });
+
+  SimpleTest.executeSoon(function() {
+    iframe.src = browserElementTestHelpers.emptyPage3;
+  });
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Reload.js b/dom/browser-element/mochitest/browserElement_Reload.js
new file mode 100644
index 0000000000..9ef6d8e7e5
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Reload.js
@@ -0,0 +1,59 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 741717 - Test the reload ability of <iframe mozbrowser>.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+var iframeScript = function() {
+  sendAsyncMessage('test:innerHTML', {
+    data: XPCNativeWrapper.unwrap(content).document.body.innerHTML
+  });
+}
+
+var mm;
+var iframe;
+var loadedEvents = 0;
+var countAcc;
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowserloadend', mozbrowserLoaded);
+
+  iframe.src = 'file_bug741717.sjs';
+  document.body.appendChild(iframe);
+}
+
+function iframeBodyRecv(data) {
+  data = SpecialPowers.wrap(data);
+  var previousCount = countAcc;
+  var currentCount = parseInt(data.json.data, 10);
+  countAcc = currentCount;
+  switch (loadedEvents) {
+  case 1:
+    iframe.reload();
+    break;
+  case 2:
+    ok(true, 'reload was triggered');
+    ok(previousCount === currentCount, 'reload was a soft reload');
+    iframe.reload(true);
+    break;
+  case 3:
+    ok(currentCount > previousCount, 'reload was a hard reload');
+    SimpleTest.finish();
+  }
+}
+
+function mozbrowserLoaded() {
+  loadedEvents++;
+  mm = SpecialPowers.getBrowserFrameMessageManager(iframe);
+  mm.addMessageListener('test:innerHTML', iframeBodyRecv);
+  mm.loadFrameScript('data:,(' + iframeScript.toString() + ')();', false);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_ReloadPostRequest.js b/dom/browser-element/mochitest/browserElement_ReloadPostRequest.js
new file mode 100644
index 0000000000..614ed7c497
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_ReloadPostRequest.js
@@ -0,0 +1,116 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 793644, fire an event when attempting to reloads browser element after
+// POST respest.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("untriaged");
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframe;
+var gotConfirmRepost = false;
+var doRepost = true;
+var timer;
+var isPostRequestSubmitted;
+
+function getExpectedStrings() {
+  let result = {};
+  let bundleService = SpecialPowers.Cc['@mozilla.org/intl/stringbundle;1'].
+    getService(SpecialPowers.Ci.nsIStringBundleService);
+  let appBundle = bundleService.createBundle("chrome://global/locale/appstrings.properties");
+  let brandBundle = bundleService.createBundle("chrome://branding/locale/brand.properties");
+  try {
+    let brandName = brandBundle.GetStringFromName("brandShortName");
+    result.message = appBundle.formatStringFromName("confirmRepostPrompt",
+                                                    [brandName], 1);
+  } catch (e) {
+    // for the case that we don't have brandShortName
+    result.message = appBundle.GetStringFromName("confirmRepostPrompt");
+  }
+  result.resend = appBundle.GetStringFromName("resendButton.label");
+
+  return result;
+}
+
+function failBecauseReloaded() {
+  window.clearTimeout(timer);
+  timer = null;
+  iframe.removeEventListener('mozbrowserloadend', failBecauseReloaded);
+  ok(false, "We don't expect browser element to reload, but it did");
+  SimpleTest.finish();
+};
+
+function reloadDone() {
+  iframe.removeEventListener('mozbrowserloadend', reloadDone);
+  ok(gotConfirmRepost, "Didn't get confirmEx prompt before reload");
+
+  // Run again, with repost disallowed.
+  doRepost = false;
+  isPostRequestSubmitted = false;
+  iframe.src = 'file_post_request.html';
+  iframe.addEventListener('mozbrowserloadend', pageLoadDone);
+}
+
+function pageLoadDone() {
+  if (!isPostRequestSubmitted) {
+    // This loadend is done by setting url in address bar, so we don't need to
+    // do anything. The test page will submit a POST request.
+    isPostRequestSubmitted = true;
+    return;
+  }
+
+  gotConfirmRepost = false;
+  iframe.removeEventListener('mozbrowserloadend', pageLoadDone);
+  if (doRepost) {
+    iframe.addEventListener('mozbrowserloadend', reloadDone);
+  } else {
+    // We don't expect browserelement to reload; use a timer to make sure
+    // it is not reloaded.
+    iframe.addEventListener('mozbrowserloadend', failBecauseReloaded);
+  }
+  iframe.reload();
+}
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  isPostRequestSubmitted = false;
+  iframe.src = 'file_post_request.html';
+  document.body.appendChild(iframe);
+
+  iframe.addEventListener('mozbrowserloadend', pageLoadDone);
+
+  let expectedMessage = getExpectedStrings();
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    if (e.detail.promptType == 'custom-prompt') {
+      gotConfirmRepost = true;
+      e.preventDefault();
+      e.detail.returnValue = {
+        selectedButton: doRepost ? 0 : 1,
+      };
+      is(e.detail.returnValue.checked, undefined);
+      is(e.detail.buttons[0].messageType, 'custom');
+      is(e.detail.buttons[0].message, expectedMessage.resend);
+      is(e.detail.buttons[1].messageType, 'builtin');
+      is(e.detail.buttons[1].message, 'cancel');
+      is(e.detail.message, expectedMessage.message);
+      is(e.detail.buttons.length, 2);
+      is(e.detail.showCheckbox, false);
+      is(e.detail.checkboxMessage, null);
+      e.detail.unblock();
+
+      if (!doRepost) {
+        // To make sure the page doesn't reload in 1 sec.
+        timer = window.setTimeout(function() {
+          iframe.removeEventListener('mozbrowserloadend', failBecauseReloaded);
+          SimpleTest.finish();
+        }, 1000);
+      }
+    }
+  });
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_RemoveBrowserElement.js b/dom/browser-element/mochitest/browserElement_RemoveBrowserElement.js
new file mode 100644
index 0000000000..583d587346
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_RemoveBrowserElement.js
@@ -0,0 +1,30 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 787517: Remove iframe in the handler of showmodalprompt. This shouldn't
+// cause an exception to be thrown.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  iframe.addEventListener("mozbrowsershowmodalprompt", function(e) {
+    document.body.removeChild(iframe);
+    SimpleTest.executeSoon(function() {
+      ok(true);
+      SimpleTest.finish();
+    });
+  });
+
+  iframe.src = "data:text/html,<html><body><script>alert(\"test\")</script>" +
+               "</body></html>";
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_ScrollEvent.js b/dom/browser-element/mochitest/browserElement_ScrollEvent.js
new file mode 100644
index 0000000000..5c4b4dcf97
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_ScrollEvent.js
@@ -0,0 +1,27 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that scroll event bubbles up.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  iframe.addEventListener("mozbrowserscroll", function(e) {
+    ok(true, "got mozbrowserscroll event.");
+    ok(e.detail, "event.detail is not null.");
+    ok(e.detail.top === 4000, "top position is correct.");
+    ok(e.detail.left === 4000, "left position is correct.");
+    SimpleTest.finish();
+  });
+
+  iframe.src = "data:text/html,<html><body style='min-height: 5000px; min-width: 5000px;'></body><script>window.scrollTo(4000, 4000);</script></html>";
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_SecurityChange.js b/dom/browser-element/mochitest/browserElement_SecurityChange.js
new file mode 100644
index 0000000000..0ef64b3fac
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_SecurityChange.js
@@ -0,0 +1,82 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 763694 - Test that <iframe mozbrowser> delivers proper
+// mozbrowsersecuritychange events.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+const { Services } = SpecialPowers.Cu.import('resource://gre/modules/Services.jsm');
+const { UrlClassifierTestUtils } = SpecialPowers.Cu.import('resource://testing-common/UrlClassifierTestUtils.jsm', {});
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  var lastSecurityState;
+  iframe.addEventListener('mozbrowsersecuritychange', function(e) {
+    lastSecurityState = e.detail;
+  });
+
+  var filepath = 'tests/dom/browser-element/mochitest/file_browserElement_SecurityChange.html';
+
+  var count = 0;
+  iframe.addEventListener('mozbrowserloadend', function(e) {
+    count++;
+    switch (count) {
+    case 1:
+      is(lastSecurityState.state, 'secure');
+      is(lastSecurityState.extendedValidation, false);
+      is(lastSecurityState.trackingContent, false);
+      is(lastSecurityState.mixedContent, false);
+      iframe.src = "http://example.com/" + filepath;
+      break;
+    case 2:
+      is(lastSecurityState.state, 'insecure');
+      is(lastSecurityState.extendedValidation, false);
+      is(lastSecurityState.trackingContent, false);
+      is(lastSecurityState.mixedContent, false);
+      iframe.src = 'https://example.com:443/' + filepath + '?broken';
+      break;
+    case 3:
+      is(lastSecurityState.state, 'broken');
+      is(lastSecurityState.extendedValidation, false);
+      is(lastSecurityState.trackingContent, false);
+      is(lastSecurityState.mixedContent, true);
+      iframe.src = "http://example.com/" + filepath + '?tracking';
+      break;
+    case 4:
+      is(lastSecurityState.state, 'insecure');
+      is(lastSecurityState.extendedValidation, false);
+      // TODO: I'm having trouble getting the tracking protection
+      // test changes to be enabled in the child process, so this
+      // isn't currently blocked in tests, but it works when
+      // manually testing.
+      // is(lastSecurityState.trackingContent, true);
+      is(lastSecurityState.mixedContent, false);
+      SimpleTest.finish();
+    }
+  });
+
+  iframe.src = "https://example.com/" + filepath;
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', function() {
+  SimpleTest.registerCleanupFunction(UrlClassifierTestUtils.cleanupTestTrackers);
+  SpecialPowers.pushPrefEnv({"set" : [
+    ["privacy.trackingprotection.enabled", true],
+    ["privacy.trackingprotection.pbmode.enabled", false],
+    ["browser.safebrowsing.phishing.enabled", false],
+    ["browser.safebrowsing.malware.enabled", false],
+  ]}, () => {
+     SimpleTest.registerCleanupFunction(UrlClassifierTestUtils.cleanupTestTrackers);
+     UrlClassifierTestUtils.addTestTrackers().then(() => {
+       runTest();
+     });
+  });
+});
+
diff --git a/dom/browser-element/mochitest/browserElement_SendEvent.js b/dom/browser-element/mochitest/browserElement_SendEvent.js
new file mode 100644
index 0000000000..a65d6f24fb
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_SendEvent.js
@@ -0,0 +1,85 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that sendMouseEvent dispatch events.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTest() {
+  var iframe = document.createElement("iframe");
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+  var x = 10;
+  var y = 10;
+  // First we force a reflow so that getChildProcessOffset actually returns
+  // meaningful data.
+  iframe.getBoundingClientRect();
+  // We need to make sure the event coordinates are actually inside the iframe,
+  // relative to the chome window.
+  var tabParent = SpecialPowers.wrap(iframe)
+                  .QueryInterface(SpecialPowers.Ci.nsIFrameLoaderOwner)
+                  .frameLoader.tabParent;
+  if (tabParent) {
+    let offsetX = {};
+    let offsetY = {};
+    tabParent.getChildProcessOffset(offsetX, offsetY);
+    x -= offsetX.value;
+    y -= offsetY.value;
+  }
+
+  iframe.addEventListener("mozbrowserloadend", function onloadend(e) {
+    iframe.sendMouseEvent("mousedown", x, y, 0, 1, 0);
+  });
+
+  iframe.addEventListener("mozbrowserlocationchange", function onlocchange(e) {
+    var a = document.createElement("a");
+    a.href = e.detail.url;
+
+    switch (a.hash) {
+      case "#mousedown":
+        ok(true, "Receive a mousedown event.");
+        iframe.sendMouseEvent("mousemove", x, y, 0, 0, 0);
+        break;
+      case "#mousemove":
+        ok(true, "Receive a mousemove event.");
+        iframe.sendMouseEvent("mouseup", x, y, 0, 1, 0);
+        break;
+      case "#mouseup":
+        ok(true, "Receive a mouseup event.");
+        break;
+      case "#click":
+        ok(true, "Receive a click event.");
+        if (SpecialPowers.getIntPref("dom.w3c_touch_events.enabled") != 0) {
+          iframe.sendTouchEvent("touchstart", [1], [x], [y], [2], [2],
+                                [20], [0.5], 1, 0);
+        } else {
+          iframe.removeEventListener('mozbrowserlocationchange', onlocchange);
+          SimpleTest.finish();
+        }
+        break;
+      case "#touchstart":
+        ok(true, "Receive a touchstart event.");
+        iframe.sendTouchEvent("touchmove", [1], [x], [y], [2], [2],
+                              [20], [0.5], 1, 0);
+      case "#touchmove":
+        ok(true, "Receive a touchmove event.");
+        iframe.sendTouchEvent("touchend", [1], [x], [y], [2], [2],
+                              [20], [0.5], 1, 0);
+        break;
+      case "#touchend":
+        ok(true, "Receive a touchend event.");
+        iframe.sendTouchEvent("touchcancel", [1], [x], [y], [2], [2],
+                              [20], [0.5], 1, 0);
+        iframe.removeEventListener('mozbrowserlocationchange', onlocchange);
+        SimpleTest.finish();
+        break;
+    }
+  });
+
+  iframe.src = "file_browserElement_SendEvent.html";
+
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_SetInputMethodActive.js b/dom/browser-element/mochitest/browserElement_SetInputMethodActive.js
new file mode 100644
index 0000000000..2b94f5cda4
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_SetInputMethodActive.js
@@ -0,0 +1,323 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 905573 - Add setInputMethodActive to browser elements to allow gaia
+// system set the active IME app.
+'use strict';
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+// We'll need to get the appId from the current document,
+// it's either SpecialPowers.Ci.nsIScriptSecurityManager.NO_APP_ID when
+// we are not running inside an app (e.g. Firefox Desktop),
+// or the appId of Mochitest app when we are running inside that app
+// (e.g. Emulator).
+var currentAppId = SpecialPowers.wrap(document).nodePrincipal.appId;
+var inApp =
+  currentAppId !== SpecialPowers.Ci.nsIScriptSecurityManager.NO_APP_ID;
+// We will also need the manifest URL and set it on iframes.
+var currentAppManifestURL;
+
+if (inApp) {
+  let appsService = SpecialPowers.Cc["@mozilla.org/AppsService;1"]
+                      .getService(SpecialPowers.Ci.nsIAppsService);
+
+  currentAppManifestURL = appsService.getManifestURLByLocalId(currentAppId);
+};
+
+info('appId=' + currentAppId);
+info('manifestURL=' + currentAppManifestURL);
+
+function setup() {
+  let appInfo = SpecialPowers.Cc['@mozilla.org/xre/app-info;1']
+                .getService(SpecialPowers.Ci.nsIXULAppInfo);
+  if (appInfo.name != 'B2G') {
+    SpecialPowers.Cu.import("resource://gre/modules/Keyboard.jsm", window);
+  }
+
+  SpecialPowers.setBoolPref("dom.mozInputMethod.enabled", true);
+  SpecialPowers.addPermission('input-manage', true, document);
+}
+
+function tearDown() {
+  SpecialPowers.setBoolPref("dom.mozInputMethod.enabled", false);
+  SpecialPowers.removePermission('input-manage', document);
+  SimpleTest.finish();
+}
+
+function runTest() {
+  createFrames();
+}
+
+var gInputMethodFrames = [];
+var gInputFrame;
+
+function createFrames() {
+  // Create two input method iframes.
+  let loadendCount = 0;
+  let countLoadend = function() {
+    loadendCount++;
+    if (loadendCount === 3) {
+      setPermissions();
+     }
+   };
+
+   // Create an input field to receive string from input method iframes.
+   gInputFrame = document.createElement('iframe');
+   gInputFrame.setAttribute('mozbrowser', 'true');
+   gInputFrame.src = 'file_browserElement_SetInputMethodActive.html';
+   document.body.appendChild(gInputFrame);
+   gInputFrame.addEventListener('mozbrowserloadend', countLoadend);
+
+   for (let i = 0; i < 2; i++) {
+     let frame = gInputMethodFrames[i] = document.createElement('iframe');
+     frame.setAttribute('mozbrowser', 'true');
+     if (currentAppManifestURL) {
+       frame.setAttribute('mozapp', currentAppManifestURL);
+     }
+     frame.addEventListener('mozbrowserloadend', countLoadend);
+     frame.src = 'file_empty.html#' + i;
+     document.body.appendChild(frame);
+   }
+ }
+
+function setPermissions() {
+  let permissions = [{
+    type: 'input',
+    allow: true,
+    context: {
+      url: SimpleTest.getTestFileURL('/file_empty.html'),
+      originAttributes: {
+        appId: currentAppId,
+        inIsolatedMozBrowser: true
+      }
+    }
+  }];
+
+  if (inApp) {
+    // The current document would also need to be given access for IPC to
+    // recognize our permission (why)?
+    permissions.push({
+      type: 'input', allow: true, context: document });
+  }
+
+  SpecialPowers.pushPermissions(permissions,
+    SimpleTest.waitForFocus.bind(SimpleTest, startTest));
+}
+
+ function startTest() {
+  // The frame script running in the frame where the input is hosted.
+  let appFrameScript = function appFrameScript() {
+    let input = content.document.body.firstElementChild;
+    input.oninput = function() {
+      sendAsyncMessage('test:InputMethod:oninput', {
+        from: 'input',
+        value: this.value
+      });
+    };
+
+    input.onblur = function() {
+      // "Expected" lost of focus since the test is finished.
+      if (input.value === 'hello#0#1') {
+        return;
+      }
+
+      sendAsyncMessage('test:InputMethod:oninput', {
+        from: 'input',
+        error: true,
+        value: 'Unexpected lost of focus on the input frame!'
+      });
+    };
+
+    input.focus();
+  };
+
+  // Inject frame script to receive input.
+  let mm = SpecialPowers.getBrowserFrameMessageManager(gInputFrame);
+  mm.loadFrameScript('data:,(' + encodeURIComponent(appFrameScript.toString()) + ')();', false);
+  mm.addMessageListener("test:InputMethod:oninput", next);
+
+  gInputMethodFrames.forEach((frame) => {
+    ok(frame.setInputMethodActive, 'Can access setInputMethodActive.');
+
+    // The frame script running in the input method frames.
+    let appFrameScript = function appFrameScript() {
+      let im = content.navigator.mozInputMethod;
+      im.oninputcontextchange = function() {
+        let ctx = im.inputcontext;
+        // Report back to parent frame on status of ctx gotten.
+        // (A setTimeout() here to ensure this always happens after
+        //  DOMRequest succeed.)
+        content.setTimeout(() => {
+          sendAsyncMessage('test:InputMethod:imFrameMessage', {
+            from: 'im',
+            value: content.location.hash + !!ctx
+          });
+        });
+
+        // If there is a context, send out the hash.
+        if (ctx) {
+          ctx.replaceSurroundingText(content.location.hash);
+        }
+      };
+    };
+
+    // Inject frame script to receive message.
+    let mm = SpecialPowers.getBrowserFrameMessageManager(frame);
+    mm.loadFrameScript('data:,(' + encodeURIComponent(appFrameScript.toString()) + ')();', false);
+    mm.addMessageListener("test:InputMethod:imFrameMessage", next);
+  });
+
+   // Set focus to the input field and wait for input methods' inputting.
+   SpecialPowers.DOMWindowUtils.focus(gInputFrame);
+
+  let req0 = gInputMethodFrames[0].setInputMethodActive(true);
+  req0.onsuccess = function() {
+    ok(true, 'setInputMethodActive succeeded (0).');
+  };
+
+  req0.onerror = function() {
+    ok(false, 'setInputMethodActive failed (0): ' + this.error.name);
+  };
+}
+
+var gCount = 0;
+
+var gFrameMsgCounts = {
+  'input': 0,
+  'im0': 0,
+  'im1': 0
+};
+
+function next(msg) {
+  let wrappedMsg = SpecialPowers.wrap(msg);
+  let from = wrappedMsg.data.from;
+  let value = wrappedMsg.data.value;
+
+  if (wrappedMsg.data.error) {
+    ok(false, wrappedMsg.data.value);
+
+    return;
+  }
+
+  let fromId = from;
+  if (from === 'im') {
+    fromId += value[1];
+  }
+  gFrameMsgCounts[fromId]++;
+
+  // The texts sent from the first and the second input method are '#0' and
+  // '#1' respectively.
+  switch (gCount) {
+    case 0:
+      switch (fromId) {
+        case 'im0':
+          if (gFrameMsgCounts.im0 === 1) {
+            is(value, '#0true', 'First frame should get the context first.');
+          } else {
+            ok(false, 'Unexpected multiple messages from im0.')
+          }
+
+          break;
+
+        case 'im1':
+          is(false, 'Shouldn\'t be hearing anything from second frame.');
+
+          break;
+
+        case 'input':
+          if (gFrameMsgCounts.input === 1) {
+            is(value, '#0hello',
+              'Failed to get correct input from the first iframe.');
+          } else {
+            ok(false, 'Unexpected multiple messages from input.')
+          }
+
+          break;
+      }
+
+      if (gFrameMsgCounts.input !== 1 ||
+          gFrameMsgCounts.im0 !== 1 ||
+          gFrameMsgCounts.im1 !== 0) {
+        return;
+      }
+
+      gCount++;
+
+      let req0 = gInputMethodFrames[0].setInputMethodActive(false);
+      req0.onsuccess = function() {
+        ok(true, 'setInputMethodActive succeeded (0).');
+      };
+      req0.onerror = function() {
+        ok(false, 'setInputMethodActive failed (0): ' + this.error.name);
+      };
+      let req1 = gInputMethodFrames[1].setInputMethodActive(true);
+      req1.onsuccess = function() {
+        ok(true, 'setInputMethodActive succeeded (1).');
+      };
+      req1.onerror = function() {
+        ok(false, 'setInputMethodActive failed (1): ' + this.error.name);
+      };
+
+      break;
+
+    case 1:
+      switch (fromId) {
+        case 'im0':
+          if (gFrameMsgCounts.im0 === 2) {
+            is(value, '#0false', 'First frame should have the context removed.');
+          } else {
+            ok(false, 'Unexpected multiple messages from im0.')
+          }
+          break;
+
+        case 'im1':
+          if (gFrameMsgCounts.im1 === 1) {
+            is(value, '#1true', 'Second frame should get the context.');
+          } else {
+            ok(false, 'Unexpected multiple messages from im0.')
+          }
+
+          break;
+
+        case 'input':
+          if (gFrameMsgCounts.input === 2) {
+            is(value, '#0#1hello',
+               'Failed to get correct input from the second iframe.');
+          } else {
+            ok(false, 'Unexpected multiple messages from input.')
+          }
+          break;
+      }
+
+      if (gFrameMsgCounts.input !== 2 ||
+          gFrameMsgCounts.im0 !== 2 ||
+          gFrameMsgCounts.im1 !== 1) {
+        return;
+      }
+
+      gCount++;
+
+      // Receive the second input from the second iframe.
+      // Deactive the second iframe.
+      let req3 = gInputMethodFrames[1].setInputMethodActive(false);
+      req3.onsuccess = function() {
+        ok(true, 'setInputMethodActive(false) succeeded (2).');
+      };
+      req3.onerror = function() {
+        ok(false, 'setInputMethodActive(false) failed (2): ' + this.error.name);
+      };
+      break;
+
+    case 2:
+      is(fromId, 'im1', 'Message sequence unexpected (3).');
+      is(value, '#1false', 'Second frame should have the context removed.');
+
+      tearDown();
+      break;
+  }
+}
+
+setup();
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_SetVisible.js b/dom/browser-element/mochitest/browserElement_SetVisible.js
new file mode 100644
index 0000000000..dac8d7e427
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_SetVisible.js
@@ -0,0 +1,75 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test the setVisible property for mozbrowser
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("untriaged");
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframeScript = function() {
+  content.document.addEventListener("visibilitychange", function() {
+    sendAsyncMessage('test:visibilitychange', {
+      hidden: content.document.hidden
+    });
+  }, false);
+}
+
+function runTest() {
+  var mm;
+  var numEvents = 0;
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  iframe1.src = 'data:text/html,1';
+
+  document.body.appendChild(iframe1);
+
+  function recvVisibilityChanged(msg) {
+    msg = SpecialPowers.wrap(msg);
+    numEvents++;
+    if (numEvents === 1) {
+      ok(true, 'iframe recieved visibility changed');
+      ok(msg.json.hidden === true, 'hidden attribute correctly set');
+      iframe1.setVisible(false);
+      iframe1.setVisible(true);
+    } else if (numEvents === 2) {
+      ok(msg.json.hidden === false, 'hidden attribute correctly set');
+      // Allow some time in case we generate too many events
+      setTimeout(function() {
+        mm.removeMessageListener('test:visibilitychange', recvVisibilityChanged);
+        SimpleTest.finish();
+      }, 100);
+    } else {
+      ok(false, 'Too many visibilitychange events');
+    }
+  }
+
+  function iframeLoaded() {
+    testGetVisible();
+  }
+
+  function testGetVisible() {
+    iframe1.setVisible(false);
+    iframe1.getVisible().onsuccess = function(evt) {
+      ok(evt.target.result === false, 'getVisible() responds false after setVisible(false)');
+
+      iframe1.setVisible(true);
+      iframe1.getVisible().onsuccess = function(evt) {
+        ok(evt.target.result === true, 'getVisible() responds true after setVisible(true)');
+        testVisibilityChanges();
+      };
+    };
+  }
+
+  function testVisibilityChanges() {
+    mm = SpecialPowers.getBrowserFrameMessageManager(iframe1);
+    mm.addMessageListener('test:visibilitychange', recvVisibilityChanged);
+    mm.loadFrameScript('data:,(' + iframeScript.toString() + ')();', false);
+    iframe1.setVisible(false);
+  }
+
+  iframe1.addEventListener('mozbrowserloadend', iframeLoaded);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_SetVisibleFrames.js b/dom/browser-element/mochitest/browserElement_SetVisibleFrames.js
new file mode 100644
index 0000000000..721248ab99
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_SetVisibleFrames.js
@@ -0,0 +1,89 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 762939 - Test that visibility propagates down properly through
+// hierarchies of <iframe mozbrowser>.
+//
+// In this test, we modify the parent's visibility and check that the child's
+// visibility is changed as appopriate.  We test modifying the child's
+// visibility in a separate testcase.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframe;
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  // Our test involves three <iframe mozbrowser>'s, parent, child1, and child2.
+  // child1 and child2 are contained inside parent.  child1 is visibile, and
+  // child2 is not.
+  //
+  // For the purposes of this test, we want there to be a process barrier
+  // between child{1,2} and parent.  Therefore parent must be a non-remote
+  // <iframe mozbrowser>, until bug 761935 is resolved and we can have nested
+  // content processes.
+  iframe.remote = false;
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', checkMessage);
+  expectMessage('parent:ready', test1);
+
+  document.body.appendChild(iframe);
+  iframe.src = 'file_browserElement_SetVisibleFrames_Outer.html';
+}
+
+function test1() {
+  expectMessage('child1:hidden', getVisibleTest1);
+  iframe.setVisible(false);
+}
+
+function getVisibleTest1() {
+  iframe.getVisible().onsuccess = function(evt) {
+    ok(evt.target.result === false, 'getVisible shows a hidden frame');
+    test2();
+  };
+}
+
+function test2() {
+  expectMessage('child1:visible', getVisibleTest2);
+  iframe.setVisible(true);
+}
+
+function getVisibleTest2() {
+  iframe.getVisible().onsuccess = function(evt) {
+    ok(evt.target.result === true, 'getVisible shows a displayed frame');
+    finish();
+  };
+}
+
+function finish() {
+  // We need to remove this listener because when this test finishes and the
+  // iframe containing this document is navigated, we'll fire a
+  // visibilitychange(false) event on all child iframes.  That's OK and
+  // expected, but if we don't remove our listener, then we'll end up causing
+  // the /next/ test to fail!
+  iframe.removeEventListener('mozbrowsershowmodalprompt', checkMessage);
+  SimpleTest.finish();
+}
+
+var expectedMsg = null;
+var expectedMsgCallback = null;
+function expectMessage(msg, next) {
+  expectedMsg = msg;
+  expectedMsgCallback = next;
+}
+
+function checkMessage(e) {
+  var msg = e.detail.message;
+  is(msg, expectedMsg);
+  if (msg == expectedMsg) {
+    expectedMsg = null;
+    SimpleTest.executeSoon(function() { expectedMsgCallback() });
+  }
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_SetVisibleFrames2.js b/dom/browser-element/mochitest/browserElement_SetVisibleFrames2.js
new file mode 100644
index 0000000000..cf841a4707
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_SetVisibleFrames2.js
@@ -0,0 +1,55 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 762939 - Test that setting a <iframe mozbrowser> to invisible / visible
+// inside an invisible <iframe mozbrowser> doesn't trigger any events.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  // We need remote = false here until bug 761935 is fixed; see
+  // SetVisibleFrames.js for an explanation.
+  iframe.remote = false;
+
+  iframe.addEventListener('mozbrowserloadend', function loadEnd(e) {
+    iframe.removeEventListener('mozbrowserloadend', loadEnd);
+    iframe.setVisible(false);
+    iframe.src = 'file_browserElement_SetVisibleFrames2_Outer.html';
+  });
+
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    if (e.detail.message == 'parent:finish') {
+      ok(true, "Got parent:finish");
+
+      // Give any extra events a chance to fire, then end the test.
+      SimpleTest.executeSoon(function() {
+        SimpleTest.executeSoon(function() {
+          SimpleTest.executeSoon(function() {
+            SimpleTest.executeSoon(function() {
+              SimpleTest.executeSoon(function() {
+                finish();
+              });
+            });
+          });
+        });
+      });
+    }
+    else {
+      ok(false, "Got unexpected message: " + e.detail.message);
+    }
+  });
+
+  document.body.appendChild(iframe);
+}
+
+function finish() {
+  SimpleTest.finish();
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Stop.js b/dom/browser-element/mochitest/browserElement_Stop.js
new file mode 100644
index 0000000000..67720c148d
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Stop.js
@@ -0,0 +1,52 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 709759 - Test the stop ability of <iframe mozbrowser>.
+
+// The img that is loaded will never be returned and will block
+// the page from loading, the timeout ensures that the page is
+// actually blocked from loading, once stop is called the
+// image load will be cancaelled and mozbrowserloadend should be called.
+
+"use strict";
+SimpleTest.waitForExplicitFinish();
+SimpleTest.requestFlakyTimeout("untriaged");
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframe;
+var stopped = false;
+var imgSrc = 'http://test/tests/dom/browser-element/mochitest/file_bug709759.sjs';
+
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  // FIXME: Bug 1270790
+  iframe.setAttribute('remote', 'true');
+  iframe.addEventListener('mozbrowserloadend', loadend);
+  iframe.src = 'data:text/html,<html>' +
+    '<body><img src="' + imgSrc + '" /></body></html>';
+
+  document.body.appendChild(iframe);
+
+  setTimeout(function() {
+    stopped = true;
+    iframe.stop();
+  }, 200);
+}
+
+function loadend() {
+  ok(stopped, 'Iframes network connections were stopped');
+
+  // Wait 1 second and make sure there isn't a mozbrowsererror after stop();
+  iframe.addEventListener('mozbrowsererror', handleError);
+  window.setTimeout(function() {
+    iframe.removeEventListener('mozbrowsererror', handleError);
+    SimpleTest.finish();
+  }, 1000);
+}
+
+function handleError() {
+  ok(false, "mozbrowsererror should not be fired");
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_TargetBlank.js b/dom/browser-element/mochitest/browserElement_TargetBlank.js
new file mode 100644
index 0000000000..89c2f33c1b
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_TargetBlank.js
@@ -0,0 +1,26 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 764718 - Test that clicking a link with _target=blank works.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    is(e.detail.url, 'http://example.com/');
+    e.preventDefault();
+    SimpleTest.finish();
+  });
+
+  iframe.src = "file_browserElement_TargetBlank.html";
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_TargetTop.js b/dom/browser-element/mochitest/browserElement_TargetTop.js
new file mode 100644
index 0000000000..54bad9c423
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_TargetTop.js
@@ -0,0 +1,31 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 771273 - Check that window.open(url, '_top') works properly with <iframe
+// mozbrowser>.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  iframe.addEventListener('mozbrowseropenwindow', function(e) {
+    ok(false, 'Not expecting an openwindow event.');
+  });
+
+  iframe.addEventListener('mozbrowserlocationchange', function(e) {
+    if (/file_browserElement_TargetTop.html\?2$/.test(e.detail.url)) {
+      ok(true, 'Got the locationchange we were looking for.');
+      SimpleTest.finish();
+    }
+  });
+
+  document.body.appendChild(iframe);
+  iframe.src = 'file_browserElement_TargetTop.html';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_ThemeColor.js b/dom/browser-element/mochitest/browserElement_ThemeColor.js
new file mode 100644
index 0000000000..01e9c5c364
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_ThemeColor.js
@@ -0,0 +1,85 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the onmozbrowsermetachange event for theme-color works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  function loadFrameScript(script) {
+    SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                 .loadFrameScript("data:," + script,
+                                  /* allowDelayedLoad = */ false);
+  }
+
+  let iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  iframe1.src = "http://test/tests/dom/browser-element/mochitest/file_browserElement_ThemeColor.html";
+  iframe1.addEventListener('mozbrowsermetachange', tests);
+  document.body.appendChild(iframe1);
+
+  let numMetaChanges = 0;
+  function tests(e) {
+    let detail = e.detail;
+
+    switch (numMetaChanges++) {
+      case 0: {
+        is(detail.name, 'theme-color', 'name matches');
+        is(detail.content, 'pink', 'content matches');
+        is(detail.type, 'added', 'type matches');
+
+        let script =
+          "var meta = content.document.head.querySelector('meta');" +
+          "meta.content = 'green';";
+        loadFrameScript(script);
+        break;
+      }
+
+      case 1: {
+        is(detail.name, 'theme-color', 'name matches');
+        is(detail.content, 'green', 'content matches');
+        is(detail.type, 'changed', 'type matches');
+
+        let script =
+          "var meta = content.document.createElement('meta');" +
+          "meta.name = 'theme-group';" +
+          "meta.content = 'theme-productivity';" +
+          "content.document.head.appendChild(meta)";
+        loadFrameScript(script);
+        break;
+      }
+
+      case 2: {
+        is(detail.name, 'theme-group', 'name matches');
+        is(detail.content, 'theme-productivity', 'content matches');
+        is(detail.type, 'added', 'type matches');
+
+        let script =
+          "var meta = content.document.head.querySelector('meta');" +
+          "meta.parentNode.removeChild(meta);";
+        loadFrameScript(script);
+        break;
+      }
+
+      case 3: {
+        is(detail.name, 'theme-color', 'name matches');
+        is(detail.content, 'green', 'content matches');
+        is(detail.type, 'removed', 'type matches');
+
+        SimpleTest.finish();
+        break;
+      }
+
+      default: {
+        ok(false, 'Too many metachange events.');
+        break;
+      }
+    }
+  };
+}
+
+window.addEventListener('testready', runTest);
+
diff --git a/dom/browser-element/mochitest/browserElement_Titlechange.js b/dom/browser-element/mochitest/browserElement_Titlechange.js
new file mode 100644
index 0000000000..78c939ad83
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Titlechange.js
@@ -0,0 +1,68 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the onmozbrowsertitlechange event works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe1);
+
+  // iframe2 is a red herring; we modify its title but don't listen for
+  // titlechanges; we want to make sure that its titlechange events aren't
+  // picked up by the listener on iframe1.
+  var iframe2 = document.createElement('iframe');
+  iframe2.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe2);
+
+  // iframe3 is another red herring.  It's not a mozbrowser, so we shouldn't
+  // get any titlechange events on it.
+  var iframe3 = document.createElement('iframe');
+  document.body.appendChild(iframe3);
+
+  var numTitleChanges = 0;
+
+  iframe1.addEventListener('mozbrowsertitlechange', function(e) {
+    // Ignore empty titles; these come from about:blank.
+    if (e.detail == '')
+      return;
+
+    numTitleChanges++;
+
+    if (numTitleChanges == 1) {
+      is(e.detail, 'Title');
+      SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                   .loadFrameScript("data:,content.document.title='New title';",
+                                    /* allowDelayedLoad = */ false);
+      SpecialPowers.getBrowserFrameMessageManager(iframe2)
+                   .loadFrameScript("data:,content.document.title='BAD TITLE 2';",
+                                    /* allowDelayedLoad = */ false);
+    }
+    else if (numTitleChanges == 2) {
+      is(e.detail, 'New title');
+      iframe1.src = 'data:text/html,<html><head><title>Title 3</title></head><body></body></html>';
+    }
+    else if (numTitleChanges == 3) {
+      is(e.detail, 'Title 3');
+      SimpleTest.finish();
+    }
+    else {
+      ok(false, 'Too many titlechange events.');
+    }
+  });
+
+  iframe3.addEventListener('mozbrowsertitlechange', function(e) {
+    ok(false, 'Should not get a titlechange event for iframe3.');
+  });
+
+  iframe1.src = 'data:text/html,<html><head><title>Title</title></head><body></body></html>';
+  iframe2.src = 'data:text/html,<html><head><title>BAD TITLE</title></head><body></body></html>';
+  iframe3.src = 'data:text/html,<html><head><title>SHOULD NOT GET EVENT</title></head><body></body></html>';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_TopBarrier.js b/dom/browser-element/mochitest/browserElement_TopBarrier.js
new file mode 100644
index 0000000000..3bd68854cd
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_TopBarrier.js
@@ -0,0 +1,81 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that an <iframe mozbrowser> is a window.{top,parent,frameElement} barrier.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+var iframe;
+function runTest() {
+  iframe = document.createElement('iframe');
+  iframe.addEventListener('mozbrowserloadend', function() {
+    try {
+      outerIframeLoaded();
+    } catch(e) {
+      dump("Got error: " + e + '\n');
+    }
+  });
+  iframe.setAttribute('mozbrowser', 'true');
+  iframe.src = 'data:text/html,Outer iframe <iframe id="inner-iframe"></iframe>';
+  // For kicks, this test uses a display:none iframe.  This shouldn't make a
+  // difference in anything.
+  iframe.style.display = 'none';
+  document.body.appendChild(iframe);
+}
+
+var numMsgReceived = 0;
+function outerIframeLoaded() {
+  // If you're changing the amount of is() calls in injectedScript,
+  // also change the number in waitForMessages accordingly
+  var injectedScript =
+    "data:,function is(a, b, desc) {                                     \
+      if (a == b) {                                                      \
+        sendAsyncMessage('test:test-pass', desc);                        \
+      } else {                                                           \
+        sendAsyncMessage('test:test-fail', desc + ' ' + a + ' != ' + b); \
+      }                                                                  \
+    }                                                                    \
+    is(content.window.top, content.window, 'top');                       \
+    is(content.window.content, content.window, 'content');               \
+    is(content.window.parent, content.window, 'parent');                 \
+    is(content.window.frameElement, null, 'frameElement');               \
+    var innerIframe = content.document.getElementById('inner-iframe');   \
+    var innerWindow = innerIframe.contentWindow;                         \
+    is(innerWindow.top, content.window, 'inner top');                    \
+    is(innerWindow.content, content.window, 'inner content');            \
+    is(innerWindow.parent, content.window, 'inner parent');              \
+    is(innerWindow.frameElement, innerIframe, 'inner frameElement');"
+
+  var mm = SpecialPowers.getBrowserFrameMessageManager(iframe);
+
+  function onRecvTestPass(msg) {
+    numMsgReceived++;
+    ok(true, msg.json);
+  }
+  mm.addMessageListener('test:test-pass', onRecvTestPass);
+
+  function onRecvTestFail(msg) {
+    numMsgReceived++;
+    ok(false, msg.json);
+  }
+  mm.addMessageListener('test:test-fail', onRecvTestFail);
+
+  mm.loadFrameScript(injectedScript, /* allowDelayedLoad = */ false);
+
+  // 8 is the number of is() calls in injectedScript
+  waitForMessages(8);
+}
+
+function waitForMessages(num) {
+  if (numMsgReceived < num) {
+    SimpleTest.executeSoon(function() { waitForMessages(num); });
+    return;
+  }
+
+  SimpleTest.finish();
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_Viewmode.js b/dom/browser-element/mochitest/browserElement_Viewmode.js
new file mode 100644
index 0000000000..51627d9a8c
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_Viewmode.js
@@ -0,0 +1,71 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the onmozbrowsermetachange event for viewmode works.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  function loadFrameScript(script) {
+    SpecialPowers.getBrowserFrameMessageManager(iframe1)
+                 .loadFrameScript('data:,' + script,
+                                  /* allowDelayedLoad = */ false);
+  }
+
+  let iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  iframe1.src = "http://test/tests/dom/browser-element/mochitest/file_browserElement_Viewmode.html";
+  iframe1.addEventListener('mozbrowsermetachange', tests);
+  document.body.appendChild(iframe1);
+
+  let numMetaChanges = 0;
+  function tests(e) {
+    let detail = e.detail;
+
+    switch (numMetaChanges++) {
+      case 0: {
+        is(detail.name, 'viewmode', 'name matches');
+        is(detail.content, 'projection=stereo', 'content matches');
+        is(detail.type, 'added', 'type matches');
+
+        let script =
+          "var meta = content.document.head.querySelector('meta');" +
+          "meta.content = 'projection=mono';";
+        loadFrameScript(script);
+        break;
+      }
+
+      case 1: {
+        is(detail.name, 'viewmode', 'name matches');
+        is(detail.content, 'projection=mono', 'content matches');
+        is(detail.type, 'changed', 'type matches');
+
+        let script =
+          "var meta = content.document.head.querySelector('meta');" +
+          "meta.parentNode.removeChild(meta);";
+        loadFrameScript(script);
+        break;
+      }
+
+      case 2: {
+        is(detail.name, 'viewmode', 'name matches');
+        is(detail.content, 'projection=mono', 'content matches');
+        is(detail.type, 'removed', 'type matches');
+
+        SimpleTest.finish();
+        break;
+      }
+
+      default: {
+        ok(false, 'Too many metachange events.');
+        break;
+      }
+    }
+  };
+}
+
+window.addEventListener('testready', runTest);
+
diff --git a/dom/browser-element/mochitest/browserElement_VisibilityChange.js b/dom/browser-element/mochitest/browserElement_VisibilityChange.js
new file mode 100644
index 0000000000..d7db5f45d8
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_VisibilityChange.js
@@ -0,0 +1,42 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the onmozbrowservisibilitychange event works.
+'use strict';
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframe1 = null;
+function runTest() {
+  iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe1);
+
+  iframe1.src = 'data:text/html,<html><head><title>Title</title></head><body></body></html>';
+  checkVisibilityFalse();
+}
+
+function checkVisibilityFalse() {
+  iframe1.addEventListener('mozbrowservisibilitychange', function onvisibilitychange(e) {
+    iframe1.removeEventListener(e.type, onvisibilitychange);
+
+    is(e.detail.visible, false, 'Visibility should be false');
+    checkVisibilityTrue();
+  });
+
+  iframe1.setVisible(false);
+}
+
+function checkVisibilityTrue() {
+  iframe1.addEventListener('mozbrowservisibilitychange', function onvisibilitychange(e) {
+    iframe1.removeEventListener(e.type, onvisibilitychange);
+
+    is(e.detail.visible, true, 'Visibility should be true');
+    SimpleTest.finish();
+  });
+
+  iframe1.setVisible(true);
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_XFrameOptions.js b/dom/browser-element/mochitest/browserElement_XFrameOptions.js
new file mode 100644
index 0000000000..391c2cb95f
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_XFrameOptions.js
@@ -0,0 +1,26 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 770239 - Test that we can load pages with X-Frame-Options: Deny inside
+// <iframe mozbrowser>.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  // The page we load will fire an alert when it successfully loads.
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    ok(true, "Got alert");
+    SimpleTest.finish();
+  });
+
+  document.body.appendChild(iframe);
+  iframe.src = 'file_browserElement_XFrameOptions.sjs?DENY';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_XFrameOptionsAllowFrom.js b/dom/browser-element/mochitest/browserElement_XFrameOptionsAllowFrom.js
new file mode 100644
index 0000000000..3657d97322
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_XFrameOptionsAllowFrom.js
@@ -0,0 +1,60 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 690168 - Support Allow-From notation for X-Frame-Options header.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+var initialScreenshotArrayBuffer = null;
+
+function arrayBuffersEqual(a, b) {
+  var x = new Int8Array(a);
+  var y = new Int8Array(b);
+  if (x.length != y.length) {
+    return false;
+  }
+
+  for (var i = 0; i < x.length; i++) {
+    if (x[i] != y[i]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function runTest() {
+  var count = 0;
+
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  iframe.height = '1000px';
+
+  var step1, stepfinish;
+  // The innermost page we load will fire an alert when it successfully loads.
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    switch (e.detail.message) {
+    case 'step 1':
+      step1 = SpecialPowers.snapshotWindow(iframe.contentWindow);
+      break;
+    case 'step 2':
+      ok(false, 'cross origin page loaded');
+      break;
+    case 'finish':
+      // The page has now attempted to load the X-Frame-Options page; take
+      // another screenshot.
+      stepfinish = SpecialPowers.snapshotWindow(iframe.contentWindow);
+      ok(step1.toDataURL() == stepfinish.toDataURL(), "Screenshots should be identical");
+      SimpleTest.finish();
+    }
+  });
+
+  document.body.appendChild(iframe);
+
+  iframe.src = 'http://example.com/tests/dom/browser-element/mochitest/file_browserElement_XFrameOptionsAllowFrom.html';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_XFrameOptionsDeny.js b/dom/browser-element/mochitest/browserElement_XFrameOptionsDeny.js
new file mode 100644
index 0000000000..bf307cc194
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_XFrameOptionsDeny.js
@@ -0,0 +1,63 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 770239 - Test that X-Frame-Options will correctly block a page inside a
+// subframe of <iframe mozbrowser>.
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+var initialScreenshotArrayBuffer;
+
+function arrayBuffersEqual(a, b) {
+  var x = new Int8Array(a);
+  var y = new Int8Array(b);
+  if (x.length != y.length) {
+    return false;
+  }
+
+  for (var i = 0; i < x.length; i++) {
+    if (x[i] != y[i]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  // Our child will create two iframes, so make sure this iframe is big enough
+  // to show both of them without scrolling, so taking a screenshot gets both
+  // frames.
+  iframe.height = '1000px';
+
+  var step1, stepfinish;
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    switch (e.detail.message) {
+    case 'step 1':
+      step1 = SpecialPowers.snapshotWindow(iframe.contentWindow);
+      break;
+    case 'step 2':
+      // The page has now attempted to load the X-Frame-Options page; take
+      // another screenshot.
+      stepfinish = SpecialPowers.snapshotWindow(iframe.contentWindow);
+      ok(step1.toDataURL() == stepfinish.toDataURL(), "Screenshots should be identical");
+      SimpleTest.finish();
+      break;
+    }
+  });
+
+  document.body.appendChild(iframe);
+
+  // Load this page from a different origin than ourselves.  This page will, in
+  // turn, load a child from mochi.test:8888, our origin, with X-Frame-Options:
+  // SAMEORIGIN.  That load should be denied.
+  iframe.src = 'http://example.com/tests/dom/browser-element/mochitest/file_browserElement_XFrameOptionsDeny.html';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_XFrameOptionsSameOrigin.js b/dom/browser-element/mochitest/browserElement_XFrameOptionsSameOrigin.js
new file mode 100644
index 0000000000..35e4ca8f05
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_XFrameOptionsSameOrigin.js
@@ -0,0 +1,28 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Bug 770239 - Load an X-Frame-Options: SAMEORIGIN page inside an <iframe>
+// inside <iframe mozbrowser>.  The two iframes will have the same origin, but
+// this page will be of a different origin.  The load should succeed.
+
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+
+  // The innermost page we load will fire an alert when it successfully loads.
+  iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+    ok(true, "Got alert");
+    SimpleTest.finish();
+  });
+
+  document.body.appendChild(iframe);
+  iframe.src = 'http://example.com/tests/dom/browser-element/mochitest/file_browserElement_XFrameOptionsSameOrigin.html';
+}
+
+addEventListener('testready', runTest);
diff --git a/dom/browser-element/mochitest/browserElement_getWebManifest.js b/dom/browser-element/mochitest/browserElement_getWebManifest.js
new file mode 100644
index 0000000000..c2b8f96f35
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_getWebManifest.js
@@ -0,0 +1,64 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/*globals async, ok, is, SimpleTest, browserElementTestHelpers*/
+
+// Bug 1169633 - getWebManifest tests
+'use strict';
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+// request to load a manifest from a page that doesn't have a manifest.
+// The expected result to be null.
+var test1 = async(function* () {
+  var manifest = yield requestManifest('file_empty.html');
+  is(manifest, null, 'it should be null.');
+});
+
+// request to load a manifest from a page that has a manifest.
+// The expected manifest to have a property name whose value is 'pass'.
+var test2 = async(function* () {
+  var manifest = yield requestManifest('file_web_manifest.html');
+  is(manifest && manifest.name, 'pass', 'it should return a manifest with name pass.');
+});
+
+// Cause an exception by attempting to fetch a file URL,
+// expect onerror to be called.
+var test3 = async(function* () {
+  var gotError = false;
+  try {
+    yield requestManifest('file_illegal_web_manifest.html');
+  } catch (err) {
+    gotError = true;
+  }
+  ok(gotError, 'onerror was called on the DOMRequest.');
+});
+
+// Run the tests
+addEventListener('testready', () => {
+  Promise
+    .all([test1(), test2(), test3()])
+    .then(SimpleTest.finish);
+});
+
+function requestManifest(url) {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  iframe.src = url;
+  document.body.appendChild(iframe);
+  return new Promise((resolve, reject) => {
+    iframe.addEventListener('mozbrowserloadend', function loadend() {
+      iframe.removeEventListener('mozbrowserloadend', loadend);
+      SimpleTest.executeSoon(() => {
+        var req = iframe.getWebManifest();
+        req.onsuccess = () => {
+          document.body.removeChild(iframe);
+          resolve(req.result);
+        };
+        req.onerror = () => {
+          document.body.removeChild(iframe);
+          reject(new Error(req.error));
+        };
+      });
+    });
+  });
+}
diff --git a/dom/browser-element/mochitest/chrome.ini b/dom/browser-element/mochitest/chrome.ini
new file mode 100644
index 0000000000..2b0561df80
--- /dev/null
+++ b/dom/browser-element/mochitest/chrome.ini
@@ -0,0 +1,92 @@
+[DEFAULT]
+skip-if = e10s || toolkit == 'android' # Bug 1287720: takes too long on android
+
+support-files =
+  audio.ogg
+  async.js
+  browserElementTestHelpers.js
+  browserElement_ActiveStateChange.js
+  browserElement_AudioChannelSeeking.js
+  browserElement_AudioChannelMutedByDefault.js
+  browserElement_AudioPlayback.js
+  browserElement_AudioChannel.js
+  browserElement_AudioChannel_nested.js
+  browserElement_BackForward.js
+  browserElement_BadScreenshot.js
+  browserElement_DocumentFirstPaint.js
+  browserElement_DOMRequestError.js
+  browserElement_ExecuteScript.js
+  browserElement_Find.js
+  browserElement_GetContentDimensions.js
+  browserElement_GetScreenshot.js
+  browserElement_GetScreenshotDppx.js
+  browserElement_getWebManifest.js
+  browserElement_NextPaint.js
+  browserElement_NoAudioTrack.js
+  browserElement_PurgeHistory.js
+  browserElement_ReloadPostRequest.js
+  browserElement_SendEvent.js
+  browserElement_SetInputMethodActive.js
+  browserElement_SetVisible.js
+  browserElement_SetVisibleFrames.js
+  browserElement_SetVisibleFrames2.js
+  browserElement_Stop.js
+  browserElement_VisibilityChange.js
+  file_audio.html
+  file_browserElement_ActiveStateChange.html
+  file_browserElement_AudioChannelSeeking.html
+  file_browserElement_AudioChannel_nested.html
+  file_browserElement_AudioChannelMutedByDefault.html
+  file_browserElement_ExecuteScript.html
+  file_browserElement_NextPaint.html
+  file_browserElement_NoAudioTrack.html
+  file_browserElement_SendEvent.html
+  file_browserElement_SetInputMethodActive.html
+  file_browserElement_SetVisibleFrames2_Outer.html
+  file_browserElement_SetVisibleFrames_Inner.html
+  file_browserElement_SetVisibleFrames_Outer.html
+  file_bug709759.sjs
+  file_empty.html
+  file_post_request.html
+  file_web_manifest.html
+  file_web_manifest.json
+  file_illegal_web_manifest.html
+  iframe_file_audio.html
+
+[test_browserElement_inproc_ActiveStateChange.html]
+tags = audiochannel
+[test_browserElement_inproc_AudioChannelMutedByDefault.html]
+tags = audiochannel
+skip-if = toolkit == 'android'
+[test_browserElement_inproc_AudioChannelSeeking.html]
+tags = audiochannel
+[test_browserElement_inproc_AudioPlayback.html]
+[test_browserElement_inproc_AudioChannel.html]
+tags = audiochannel
+[test_browserElement_inproc_AudioChannel_nested.html]
+tags = audiochannel
+[test_browserElement_inproc_BackForward.html]
+[test_browserElement_inproc_BadScreenshot.html]
+[test_browserElement_inproc_DocumentFirstPaint.html]
+[test_browserElement_inproc_DOMRequestError.html]
+[test_browserElement_inproc_ExecuteScript.html]
+[test_browserElement_inproc_Find.html]
+[test_browserElement_inproc_GetContentDimensions.html]
+[test_browserElement_inproc_GetScreenshot.html]
+[test_browserElement_inproc_GetScreenshotDppx.html]
+[test_browserElement_inproc_getWebManifest.html]
+[test_browserElement_inproc_NextPaint.html]
+[test_browserElement_inproc_NoAudioTrack.html]
+tags = audiochannel
+[test_browserElement_inproc_PurgeHistory.html]
+[test_browserElement_inproc_ReloadPostRequest.html]
+disabled = no modal prompt on POST reload for chrome window
+[test_browserElement_inproc_SendEvent.html]
+# The setInputMethodActive() tests will timed out on Android
+[test_browserElement_inproc_SetInputMethodActive.html]
+skip-if = true
+[test_browserElement_inproc_SetVisible.html]
+[test_browserElement_inproc_SetVisibleFrames.html]
+[test_browserElement_inproc_SetVisibleFrames2.html]
+[test_browserElement_inproc_Stop.html]
+[test_browserElement_inproc_VisibilityChange.html]
diff --git a/dom/browser-element/mochitest/createNewTest.py b/dom/browser-element/mochitest/createNewTest.py
new file mode 100644
index 0000000000..309ff95344
--- /dev/null
+++ b/dom/browser-element/mochitest/createNewTest.py
@@ -0,0 +1,126 @@
+"""A script to generate the browser-element test boilerplate.
+
+This script requires Python 2.7."""
+
+from __future__ import print_function
+
+import sys
+import os
+import stat
+import argparse
+import textwrap
+import subprocess
+
+html_template = textwrap.dedent("""\
+    <!DOCTYPE HTML>
+    <html>
+    <head>
+      <title>Test for Bug {bug}</title>
+      <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+      <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+      <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+    </head>
+    <body>
+    <script type="application/javascript;version=1.7" src="browserElement_{test}.js">
+    </script>
+    </body>
+    </html>""")
+
+# Note: Curly braces are escaped as "{{".
+js_template = textwrap.dedent("""\
+    /* Any copyright is dedicated to the public domain.
+       http://creativecommons.org/publicdomain/zero/1.0/ */
+
+    // Bug {bug} - FILL IN TEST DESCRIPTION
+    "use strict";
+
+    SimpleTest.waitForExplicitFinish();
+    browserElementTestHelpers.setEnabledPref(true);
+    browserElementTestHelpers.addPermission();
+
+    function runTest() {{
+      var iframe = document.createElement('iframe');
+      iframe.setAttribute('mozbrowser', 'true');
+
+      // FILL IN TEST
+
+      document.body.appendChild(iframe);
+    }}
+
+    addEventListener('testready', runTest);
+    """)
+
+def print_fill(s):
+    print(textwrap.fill(textwrap.dedent(s)))
+
+def add_to_ini(filename, test, support_file=None):
+    """Add test to mochitest config {filename}, then open
+    $EDITOR and let the user move the filenames to their appropriate
+    places in the file.
+
+    """
+    lines_to_write = ['[{0}]'.format(test)]
+    if support_file:
+        lines_to_write += ['support-files = {0}'.format(support_file)]
+    lines_to_write += ['']
+    with open(filename, 'a') as f:
+        f.write('\n'.join(lines_to_write))
+
+    if 'EDITOR' not in os.environ or not os.environ['EDITOR']:
+        print_fill("""\
+            Now open {filename} and move the filenames to their correct places.")
+            (Define $EDITOR and I'll open your editor for you next time.)""".format(filename=filename))
+        return
+
+    # Count the number of lines in the file
+    with open(filename, 'r') as f:
+        num_lines = len(f.readlines())
+
+    try:
+        subprocess.call([os.environ['EDITOR'],
+                         '+%d' % (num_lines - len(lines_to_write) + 2),
+                         filename])
+    except Exception as e:
+        print_fill("Error opening $EDITOR: {0}.".format(e))
+        print()
+        print_fill("""\
+            Please open {filename} and move the filenames at the bottom of the
+            file to their correct places.""".format(filename=filename))
+
+def main(test_name, bug_number):
+    global html_template, js_template
+
+    def format(str):
+        return str.format(bug=bug_number, test=test_name)
+
+    def create_file(filename, template):
+        path = os.path.join(os.path.dirname(sys.argv[0]), format(filename))
+        # Create a new file, bailing with an error if the file exists.
+        fd = os.open(path, os.O_WRONLY | os.O_CREAT | os.O_EXCL)
+
+        try:
+            # This file has 777 permission when created, for whatever reason.  Make it rw-rw-r---.
+            os.fchmod(fd, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP | stat.S_IROTH)
+        except:
+            # fchmod doesn't work on Windows.
+            pass
+
+        with os.fdopen(fd, 'w') as file:
+            file.write(format(template))
+
+    create_file('browserElement_{test}.js', js_template)
+    create_file('test_browserElement_inproc_{test}.html', html_template)
+    create_file('test_browserElement_oop_{test}.html', html_template)
+
+    add_to_ini('mochitest.ini',
+               format('test_browserElement_inproc_{test}.html'),
+               format('browserElement_{test}.js'))
+    add_to_ini('mochitest-oop.ini',
+               format('test_browserElement_oop_{test}.html'))
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description="Create a new browser-element testcase.")
+    parser.add_argument('test_name')
+    parser.add_argument('bug_number', type=int)
+    args = parser.parse_args()
+    main(args.test_name, args.bug_number)
diff --git a/dom/browser-element/mochitest/file_audio.html b/dom/browser-element/mochitest/file_audio.html
new file mode 100644
index 0000000000..0e4a8d7c6a
--- /dev/null
+++ b/dom/browser-element/mochitest/file_audio.html
@@ -0,0 +1,15 @@
+<html>
+<body>
+<audio src="chrome://mochitests/content/chrome/dom/browser-element/mochitest/audio.ogg" id="audio" />
+<script>
+var audio = document.getElementById('audio');
+audio.play();
+audio.onended = function() {
+  setTimeout(function() {
+    audio.play();
+  }, 0);
+}
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_ActiveStateChange.html b/dom/browser-element/mochitest/file_browserElement_ActiveStateChange.html
new file mode 100644
index 0000000000..5228d67bf7
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_ActiveStateChange.html
@@ -0,0 +1,25 @@
+<!DOCTYPE HTML>
+<html>
+<body>
+<script type="application/javascript;version=1.7">
+var audio = new Audio();
+audio.src = "audio.ogg";
+audio.loop = true;
+
+function runCommands()
+{
+  switch(location.hash) {
+    case '#play':
+      audio.play();
+      break;
+    case '#pause':
+      audio.pause();
+      break;
+    default :
+      alert("Undefined command!");
+  }
+}
+window.addEventListener('hashchange', runCommands);
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/file_browserElement_AlertInFrame.html b/dom/browser-element/mochitest/file_browserElement_AlertInFrame.html
new file mode 100644
index 0000000000..8bdac1d25d
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_AlertInFrame.html
@@ -0,0 +1,6 @@
+<html>
+<body>
+I'm file_browserElement_AlertInFrame.html.
+<iframe src='file_browserElement_AlertInFrame_Inner.html'></iframe>
+<body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_AlertInFrame_Inner.html b/dom/browser-element/mochitest/file_browserElement_AlertInFrame_Inner.html
new file mode 100644
index 0000000000..958413f2d2
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_AlertInFrame_Inner.html
@@ -0,0 +1,12 @@
+<html>
+<body>
+I'm file_browserElement_AlertInFrame_Inner.html.
+
+<script>
+addEventListener('load', function() {
+  alert("Hello");
+});
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_AudioChannelMutedByDefault.html b/dom/browser-element/mochitest/file_browserElement_AudioChannelMutedByDefault.html
new file mode 100644
index 0000000000..ea4f3bde12
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_AudioChannelMutedByDefault.html
@@ -0,0 +1,65 @@
+<html>
+<body>
+<script>
+var audio = new Audio("audio.ogg");
+var context = new AudioContext();
+var node = context.createMediaElementSource(audio);
+var sp = context.createScriptProcessor(2048, 1);
+node.connect(sp);
+var expectedSamplesCount;
+var nonzeroSamplesCount = 0;
+var isStarted = false;
+
+function ok(aVal, aMsg) {
+  alert((!!aVal ? "OK" : "KO") + ", " + aMsg);
+}
+
+function finish() {
+  audio.onended = null;
+  audio.pause();
+  alert("DONE");
+}
+
+function processSamples(e) {
+  var buf = e.inputBuffer.getChannelData(0);
+  for (var i = 0; i < buf.length; ++i) {
+    if (buf[i] != 0) {
+      if (!isStarted) {
+        isStarted = true;
+        ok(true, "Start process audio sample.");
+      }
+      nonzeroSamplesCount++;
+    }
+  }
+
+  if (nonzeroSamplesCount >= expectedSamplesCount) {
+    finish();
+  }
+}
+
+audio.oncanplaythrough = function() {
+  var testDuration = audio.duration > 1.0 ? 1.0 : audio.duration * 0.5;
+  expectedSamplesCount = Math.floor(testDuration * context.sampleRate);
+  sp.onaudioprocess = processSamples;
+};
+
+function runCommands()
+{
+  switch(location.hash) {
+    case '#play':
+      ok(true, "Audio starts playing.")
+      audio.play();
+      audio.onended = () => {
+        audio.onended = null;
+        ok(false, "Audio shouldn't go ended in this test!")
+      };
+      break;
+    default :
+      ok(false, "Undefined command!");
+  }
+}
+
+window.addEventListener('hashchange', runCommands);
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_AudioChannelSeeking.html b/dom/browser-element/mochitest/file_browserElement_AudioChannelSeeking.html
new file mode 100644
index 0000000000..293f6cadc4
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_AudioChannelSeeking.html
@@ -0,0 +1,62 @@
+<!DOCTYPE HTML>
+<html>
+<body>
+<script type="application/javascript;version=1.7">
+var audio = new Audio();
+audio.src = "audio.ogg";
+audio.loop = true;
+
+function assert(aVal, aMessage) {
+  return (!aVal) ? ok(false, aMessage) : 0;
+}
+
+function ok(aVal, aMsg) {
+  alert((!!aVal ? "OK" : "KO") + ", " + aMsg);
+}
+
+function info(aMsg) {
+  alert("INFO" + ", " + aMsg);
+}
+
+function randomSeeking() {
+  var seekingPosition = Math.random() * audio.duration;
+  assert(seekingPosition < audio.duration, "Seeking position out of range!")
+  audio.currentTime = seekingPosition;
+  audio.onseeked = () => {
+    audio.onseeked = null;
+    location.hash = '#idle';
+    ok(true, "Seeking complete, position = " + seekingPosition);
+  };
+}
+
+function runCommands()
+{
+  switch(location.hash) {
+    case '#play':
+      audio.play();
+      audio.onplay = () => {
+        audio.onplay = null;
+        info("Start playing, duration = " + audio.duration);
+      };
+      break;
+    case '#seeking':
+      randomSeeking();
+      break;
+    case '#pause':
+      audio.pause();
+      audio.onpause = () => {
+        audio.onpause = null;
+        ok(true, "Stop playing.");
+      };
+      break;
+    case '#idle':
+      break;
+    default :
+      ok(false, "Undefined command!");
+  }
+}
+
+window.addEventListener('hashchange', runCommands);
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/file_browserElement_AudioChannel_nested.html b/dom/browser-element/mochitest/file_browserElement_AudioChannel_nested.html
new file mode 100644
index 0000000000..c37a642e2d
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_AudioChannel_nested.html
@@ -0,0 +1,63 @@
+<html>
+<head>
+<script type="text/javascript">
+
+  function ok(a, msg) {
+    alert((!!a ? "OK" : "KO") + " " + msg);
+  }
+
+  function is(a, b, msg) {
+    ok(a === b, msg);
+  }
+
+  function finish(a, b, msg) {
+    alert("DONE");
+  }
+
+  addEventListener('load', function(e) {
+    var iframe = document.createElement('iframe');
+    iframe.setAttribute('mozbrowser', 'true');
+    // set 'remote' to true here will make the the iframe remote in _inproc_
+    // test and in-process in _oop_  test.
+    iframe.setAttribute('remote', 'true');
+    iframe.setAttribute('mozapp', 'http://example.org/manifest.webapp');
+
+    iframe.addEventListener('mozbrowserloadend', function(e) {
+      ok("mute" in iframe, "iframe.mute exists");
+      ok("unmute" in iframe, "iframe.unmute exists");
+      ok("getMuted" in iframe, "iframe.getMuted exists");
+      ok("getVolume" in iframe, "iframe.getVolume exists");
+      ok("setVolume" in iframe, "iframe.setVolume exists");
+
+      ok("allowedAudioChannels" in iframe, "allowedAudioChannels exist");
+      var channels = iframe.allowedAudioChannels;
+      is(channels.length, 9, "9 audio channel by default");
+
+      var ac = channels[0];
+
+      ok(ac instanceof BrowserElementAudioChannel, "Correct class");
+      ok("getVolume" in ac, "ac.getVolume exists");
+      ok("setVolume" in ac, "ac.setVolume exists");
+      ok("getMuted" in ac, "ac.getMuted exists");
+      ok("setMuted" in ac, "ac.setMuted exists");
+      ok("isActive" in ac, "ac.isActive exists");
+
+      ac.onactivestatechanged = function() {
+        ok(true, "activestatechanged event received.");
+
+        ac.getVolume().onsuccess = function(e) {
+          ok(e.target.result, 1, "Default volume is 1");
+        };
+
+        finish();
+      }
+    });
+
+    document.body.appendChild(iframe);
+    iframe.src = 'chrome://mochitests/content/chrome/dom/browser-element/mochitest/file_audio.html';
+  });
+</script>
+</head>
+<body>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_BrowserWindowNamespace.html b/dom/browser-element/mochitest/file_browserElement_BrowserWindowNamespace.html
new file mode 100644
index 0000000000..7903a63b8e
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_BrowserWindowNamespace.html
@@ -0,0 +1,9 @@
+<html>
+<body>
+<script>
+addEventListener('load', function() {
+  window.open("http://example.com/" + location.hash, "foo");
+});
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_CloseFromOpener.html b/dom/browser-element/mochitest/file_browserElement_CloseFromOpener.html
new file mode 100644
index 0000000000..4a08c2792b
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_CloseFromOpener.html
@@ -0,0 +1,8 @@
+<html>
+<body>
+<script>
+var win = window.open('file_empty.html');
+win.close();
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_CookiesNotThirdParty.html b/dom/browser-element/mochitest/file_browserElement_CookiesNotThirdParty.html
new file mode 100644
index 0000000000..62f39d8ff3
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_CookiesNotThirdParty.html
@@ -0,0 +1,25 @@
+<html>
+<body>
+file_browserElement_CookiesNotThirdParty.html
+
+<script type='text/javascript;version=1.7'>
+if (location.search != '?step=2') {
+  // Step 1: Set a cookie.
+  document.cookie = 'file_browserElement_CookiesNotThirdParty';
+  alert('next');
+}
+else {
+  // Step 2: Read the cookie.
+  if (document.cookie == 'file_browserElement_CookiesNotThirdParty') {
+    alert('success: got the correct cookie');
+  }
+  else {
+    alert('failure: got unexpected cookie: "' + document.cookie + '"');
+  }
+
+  alert('finish');
+}
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_ExecuteScript.html b/dom/browser-element/mochitest/file_browserElement_ExecuteScript.html
new file mode 100644
index 0000000000..d2c364aeb9
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_ExecuteScript.html
@@ -0,0 +1,8 @@
+<html>
+<head>
+  <script>
+window.btoa = () => "fake btoa";
+  </script>
+</head>
+<body>foo</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_ForwardName.html b/dom/browser-element/mochitest/file_browserElement_ForwardName.html
new file mode 100644
index 0000000000..60b41bbc64
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_ForwardName.html
@@ -0,0 +1,15 @@
+<html>
+<body>
+<script>
+
+if (window.name == 'foo') {
+  alert("success:window.name == 'foo'");
+}
+else {
+  alert("failure:window.name == '" + window.name + "', expected 'foo'");
+}
+
+window.open('file_browserElement_ForwardName.html#finish', 'foo');
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_FrameWrongURI.html b/dom/browser-element/mochitest/file_browserElement_FrameWrongURI.html
new file mode 100644
index 0000000000..1a6cfde0a5
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_FrameWrongURI.html
@@ -0,0 +1,5 @@
+<script>
+  function testSucceeded() { alert("success"); }
+  function callback() { return "<script>opener.testSucceeded()</" + "script>"; }
+  var w = window.open("javascript:opener.callback();");
+</script>
diff --git a/dom/browser-element/mochitest/file_browserElement_LoadEvents.html b/dom/browser-element/mochitest/file_browserElement_LoadEvents.html
new file mode 100644
index 0000000000..7e0705e9db
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_LoadEvents.html
@@ -0,0 +1,14 @@
+<html>
+<body style="background-color:green;">
+
+<!-- Tests rely on the fact that there's an element in here called 'url' and
+     that there's visible text on the page. -->
+
+Aloha!  My URL is <span id='url'></span>.
+
+<script>
+document.getElementById('url').innerHTML = window.location;
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_Metachange.sjs b/dom/browser-element/mochitest/file_browserElement_Metachange.sjs
new file mode 100644
index 0000000000..c63a047f7d
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_Metachange.sjs
@@ -0,0 +1,7 @@
+function handleRequest(request, response)
+{
+  var p = request.queryString.split('|');
+  response.setHeader('Content-Language', p[0], false);
+  response.write('<html><head><meta name="application-name" content="sjs"' +
+                  (p.length > 1 ? (' lang="' + p[1] + '"') : '') + '></head><body></body></html>');
+}
diff --git a/dom/browser-element/mochitest/file_browserElement_NextPaint.html b/dom/browser-element/mochitest/file_browserElement_NextPaint.html
new file mode 100644
index 0000000000..d460fc5b9e
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_NextPaint.html
@@ -0,0 +1,9 @@
+<html>
+<body>
+<script>
+addEventListener("hashchange", function () {
+  document.body.style.backgroundColor = "red";
+});
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_NoAudioTrack.html b/dom/browser-element/mochitest/file_browserElement_NoAudioTrack.html
new file mode 100644
index 0000000000..14304e4697
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_NoAudioTrack.html
@@ -0,0 +1,32 @@
+<!DOCTYPE HTML>
+<html>
+<body>
+<script type="application/javascript;version=1.7">
+var audio = new Audio();
+audio.src = "noaudio.webm";
+audio.preload = "none";
+audio.loop = true;
+
+function ok(aVal, aMsg) {
+  alert((!!aVal ? "OK" : "KO") + ", " + aMsg);
+}
+
+function runCommands()
+{
+  switch(location.hash) {
+    case '#play':
+      audio.play();
+      ok(true, "Start playing a video without audio track!");
+      break;
+    case '#idle':
+      ok(!audio.paused, "Video is still playing!");
+      break;
+    default :
+      ok(false, "Undefined command!");
+  }
+}
+
+window.addEventListener('hashchange', runCommands);
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/file_browserElement_Open1.html b/dom/browser-element/mochitest/file_browserElement_Open1.html
new file mode 100644
index 0000000000..c74415e2e2
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_Open1.html
@@ -0,0 +1,34 @@
+<html>
+<body>
+<script>
+
+// Because this file is inside <iframe mozbrowser>, the alert() calls below
+// don't trigger actual dialogs.  Instead, the document which contans the
+// iframe receives mozbrowsershowmodalprompt events, which the document uses
+// to determine test success/failure.
+
+function is(x, y, reason) {
+  if (x === y)  {
+    alert("success: " + x + " === " + y + ", " + reason);
+  }
+  else {
+    alert("failure: " + x + " !== " + y + ", " + reason);
+  }
+}
+
+function ok(bool, reason) {
+  alert((bool ? "success: " : "failure: ") + reason);
+}
+
+// Send "dialog=1" as a test for bug 783644.  It shouldn't have any effect.
+var w = window.open("file_browserElement_Open2.html", "name", "dialog=1");
+w.addEventListener("load", function() {
+  ok(true, "got load");
+  is(w.opener, window, 'opener property');
+  is(w.location.href, location.href.replace('Open1', 'Open2'), 'correct location');
+  is(w.document.getElementById('testElem').innerHTML, 'test', 'elem innerHTML');
+  alert("finish");
+});
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_Open2.html b/dom/browser-element/mochitest/file_browserElement_Open2.html
new file mode 100644
index 0000000000..af9d2b6cde
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_Open2.html
@@ -0,0 +1,5 @@
+<html>
+<body>
+<div id='testElem'>test</div>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_OpenMixedProcess.html b/dom/browser-element/mochitest/file_browserElement_OpenMixedProcess.html
new file mode 100644
index 0000000000..873a99f1a9
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_OpenMixedProcess.html
@@ -0,0 +1,22 @@
+<html>
+<body>
+
+<!-- The test relies on the fact that this file is completely empty. -->
+
+<script>
+
+function ok(b, msg)
+{
+  alert((b ? 'pass:' : 'fail:') + msg);
+}
+
+var w = window.open("file_empty.html");
+w.addEventListener('load', function() {
+  ok(true, 'Got load.');
+  ok(w.document.getElementById('url'), 'Found element with id "url"');
+  alert('finish');
+});
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_OpenNamed.html b/dom/browser-element/mochitest/file_browserElement_OpenNamed.html
new file mode 100644
index 0000000000..7d2a7661c2
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_OpenNamed.html
@@ -0,0 +1,7 @@
+<html>
+<body>
+<script>
+window.open('file_browserElement_OpenNamed2.html', 'OpenNamed');
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_OpenNamed2.html b/dom/browser-element/mochitest/file_browserElement_OpenNamed2.html
new file mode 100644
index 0000000000..6bf37bb533
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_OpenNamed2.html
@@ -0,0 +1,7 @@
+<html>
+<body>
+<script>
+alert('success: loaded');
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_OpenWindowDifferentOrigin.html b/dom/browser-element/mochitest/file_browserElement_OpenWindowDifferentOrigin.html
new file mode 100644
index 0000000000..dc08f341c4
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_OpenWindowDifferentOrigin.html
@@ -0,0 +1,18 @@
+<html>
+<body>
+
+<div id='name'></div>
+
+<script>
+if (location.search == "?1") {
+  open("http://example.com/tests/dom/browser-element/mochitest/file_browserElement_OpenWindowDifferentOrigin.html?2");
+}
+else if (location.search == "?2") {
+  alert("finish");
+}
+
+document.getElementById('name').innerHTML = location.search;
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_OpenWindowEmpty.html b/dom/browser-element/mochitest/file_browserElement_OpenWindowEmpty.html
new file mode 100644
index 0000000000..fefd6f6ca1
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_OpenWindowEmpty.html
@@ -0,0 +1,7 @@
+<html>
+<body>
+<script>
+window.open();
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_OpenWindowInFrame.html b/dom/browser-element/mochitest/file_browserElement_OpenWindowInFrame.html
new file mode 100644
index 0000000000..c1c1cecd31
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_OpenWindowInFrame.html
@@ -0,0 +1,6 @@
+<html>
+<body>
+I'm file_browserElement_OpenInFrame.html.
+<iframe src='file_browserElement_Open1.html'></iframe>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_OpenWindowRejected.html b/dom/browser-element/mochitest/file_browserElement_OpenWindowRejected.html
new file mode 100644
index 0000000000..eb6786979a
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_OpenWindowRejected.html
@@ -0,0 +1,16 @@
+<html>
+<body>
+
+<script>
+var w = window.open('does_not_exist.html');
+if (!w) {
+  alert("success:w is null");
+}
+else {
+  alert("failure:w is not null -- " + w);
+}
+alert("finish");
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_PrivateBrowsing.html b/dom/browser-element/mochitest/file_browserElement_PrivateBrowsing.html
new file mode 100644
index 0000000000..40ff9d8af8
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_PrivateBrowsing.html
@@ -0,0 +1,15 @@
+<html>
+<body>
+<script>
+
+if (location.href.indexOf("clear=true") != -1) {
+  localStorage.removeItem("foo");
+  alert("CLEAR");
+} else {
+  var initialValue = localStorage.getItem("foo") || "EMPTY";
+  localStorage.setItem("foo", "bar");
+  alert(initialValue);
+}
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_SecurityChange.html b/dom/browser-element/mochitest/file_browserElement_SecurityChange.html
new file mode 100644
index 0000000000..09c006e7c9
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_SecurityChange.html
@@ -0,0 +1,21 @@
+<html>
+<head>
+
+<script>
+if (location.search === '?broken') {
+  // Load something non-https.
+  var s = document.createElement('script');
+  s.src = 'http://example.com/dom/browser-element/mochitest/file_empty_script.js';
+  document.head.appendChild(s);
+} else if (location.search === '?tracking') {
+  var img = document.createElement('img');
+  img.src = 'http://tracking.example.com/tests/toolkit/components/url-classifier/tests/mochitest/raptor.jpg';
+  document.body.appendChild(img);
+}
+</script>
+</head>
+
+<body>
+file_browserElement_SecurityChange.html.
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_SendEvent.html b/dom/browser-element/mochitest/file_browserElement_SendEvent.html
new file mode 100644
index 0000000000..3c510180d8
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_SendEvent.html
@@ -0,0 +1,15 @@
+<html><body>
+<button>send[Mouse|Touch]Event</button>
+</body><script>
+function changeHash(e) {
+  document.location.hash = e.type;
+};
+window.addEventListener('mousedown', changeHash);
+window.addEventListener('mousemove', changeHash);
+window.addEventListener('mouseup', changeHash);
+window.addEventListener('click', changeHash, true);
+window.addEventListener('touchstart', changeHash);
+window.addEventListener('touchmove', changeHash);
+window.addEventListener('touchend', changeHash);
+window.addEventListener('touchcancel', changeHash);
+</script></html>
diff --git a/dom/browser-element/mochitest/file_browserElement_SetInputMethodActive.html b/dom/browser-element/mochitest/file_browserElement_SetInputMethodActive.html
new file mode 100644
index 0000000000..5eb17e5f10
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_SetInputMethodActive.html
@@ -0,0 +1,2 @@
+<input autofocus value="hello" />
+<p>This is targetted mozbrowser frame.</p>
diff --git a/dom/browser-element/mochitest/file_browserElement_SetVisibleFrames2_Outer.html b/dom/browser-element/mochitest/file_browserElement_SetVisibleFrames2_Outer.html
new file mode 100644
index 0000000000..c4fa25d26b
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_SetVisibleFrames2_Outer.html
@@ -0,0 +1,25 @@
+<html>
+<body>
+<script>
+
+var iframe = document.createElement('iframe');
+iframe.setAttribute("mozbrowser", "true");
+
+iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {
+  if (e.detail.message == 'child:ready') {
+    setTimeout(function() {
+      iframe.setVisible(false);
+      iframe.setVisible(true);
+      setTimeout(function() {
+        alert('parent:finish');
+      }, 0);
+    }, 0);
+  }
+});
+
+document.body.appendChild(iframe);
+iframe.src = 'file_browserElement_SetVisibleFrames_Inner.html?child';
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_SetVisibleFrames_Inner.html b/dom/browser-element/mochitest/file_browserElement_SetVisibleFrames_Inner.html
new file mode 100644
index 0000000000..8f9b871d6e
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_SetVisibleFrames_Inner.html
@@ -0,0 +1,18 @@
+<html>
+<body>
+<script>
+
+var name = location.search.substring(1);
+addEventListener('load', function() {
+  setTimeout(function() {
+    alert(name + ':ready');
+  }, 0);
+});
+
+addEventListener('visibilitychange', function() {
+  alert(name + ':' + (document.hidden ? 'hidden' : 'visible'));
+});
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_SetVisibleFrames_Outer.html b/dom/browser-element/mochitest/file_browserElement_SetVisibleFrames_Outer.html
new file mode 100644
index 0000000000..6abcc6b0c5
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_SetVisibleFrames_Outer.html
@@ -0,0 +1,45 @@
+<html>
+<body>
+
+<script>
+
+var numPrompts = 0;
+function handlePrompt(e) {
+  numPrompts++;
+
+  // The first two prompts should be "child1:ready" and "child2:ready".  Once
+  // we get both of these, forward the child's prompt up to our parent.
+  if (numPrompts == 2) {
+    // This has to happen here, because setVisibile doesn't exist on the iframe
+    // until BrowserElementChild.js is loaded in it.  (That's pretty broken...)
+    iframe2.setVisible(false);
+  }
+  else if (numPrompts == 3) {
+    if (e.detail.message != 'child2:hidden') {
+      alert("parent:fail Didn't get expected 'child2:hidden'.");
+    }
+
+    alert('parent:ready');
+  }
+  else if (numPrompts == 4 || numPrompts == 5) {
+    alert(e.detail.message);
+  }
+}
+
+var iframe1 = document.createElement('iframe');
+iframe1.setAttribute("mozbrowser", "true");
+iframe1.addEventListener('mozbrowsershowmodalprompt', handlePrompt);
+
+var iframe2 = document.createElement('iframe');
+iframe2.setAttribute("mozbrowser", "true");
+iframe2.addEventListener('mozbrowsershowmodalprompt', handlePrompt);
+
+iframe1.src = 'file_browserElement_SetVisibleFrames_Inner.html?child1';
+iframe2.src = 'file_browserElement_SetVisibleFrames_Inner.html?child2';
+document.body.appendChild(iframe1);
+document.body.appendChild(iframe2);
+
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_TargetBlank.html b/dom/browser-element/mochitest/file_browserElement_TargetBlank.html
new file mode 100644
index 0000000000..860573a3e3
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_TargetBlank.html
@@ -0,0 +1,18 @@
+<html>
+<body>
+<a id='link' target='_blank' href="http://example.com">Click me</a>
+
+<script>
+function clickLink() {
+  // See testcase in bug 666604.
+  var e = document.createEvent("MouseEvent");
+  e.initMouseEvent("click", true, true, window, 0, 0, 0, 0, 0,
+                   false, false, false, false, 0, null);
+  document.getElementById('link').dispatchEvent(e);
+}
+
+addEventListener('load', function() { setTimeout(clickLink, 0) });
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_TargetTop.html b/dom/browser-element/mochitest/file_browserElement_TargetTop.html
new file mode 100644
index 0000000000..aad06361d4
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_TargetTop.html
@@ -0,0 +1,12 @@
+<html>
+<body>
+<div id='url'></div>
+
+<script>
+if (location.search == '') {
+  window.open('file_browserElement_TargetTop.html?2', '_top');
+}
+document.getElementById('url').innerHTML = document.location.href;
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_ThemeColor.html b/dom/browser-element/mochitest/file_browserElement_ThemeColor.html
new file mode 100644
index 0000000000..f8fb9f116d
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_ThemeColor.html
@@ -0,0 +1,8 @@
+<html>
+  <head>
+    <meta name="theme-color" content="pink">
+  </head>
+
+  <body>
+  </body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_Viewmode.html b/dom/browser-element/mochitest/file_browserElement_Viewmode.html
new file mode 100644
index 0000000000..422279e0ae
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_Viewmode.html
@@ -0,0 +1,8 @@
+<html>
+  <head>
+    <meta name="viewmode" content="projection=stereo">
+  </head>
+
+  <body>
+  </body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_XFrameOptions.sjs b/dom/browser-element/mochitest/file_browserElement_XFrameOptions.sjs
new file mode 100644
index 0000000000..7e23756802
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_XFrameOptions.sjs
@@ -0,0 +1,9 @@
+function handleRequest(request, response)
+{
+  response.setHeader("X-Frame-Options", request.queryString, false);
+  response.setHeader("Content-Type", "text/html", false);
+
+  // Tests rely on this page not being entirely blank, because they take
+  // screenshots to determine whether this page was loaded.
+  response.write("<html><body>XFrameOptions test<script>alert('finish')</script></body></html>");
+}
diff --git a/dom/browser-element/mochitest/file_browserElement_XFrameOptionsAllowFrom.html b/dom/browser-element/mochitest/file_browserElement_XFrameOptionsAllowFrom.html
new file mode 100644
index 0000000000..12a6fd31ed
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_XFrameOptionsAllowFrom.html
@@ -0,0 +1,43 @@
+<html>
+<body>
+
+  <!-- Try to load in a frame a cross-origin page which sends:
+     "X-Frame-Options: Allow-From http://mochi.test:8888/",
+       and a cross-origin page which sends
+     "X-Frame-Options: Allow-From http://example.com/". -->
+
+<script>
+
+// Make sure these iframes aren't too tall; they both need to fit inside the
+// iframe this page is contained in, without scrolling, in order for the test's
+// screenshots to work properly.
+
+var frame_src = 'http://example.com/tests/dom/browser-element/mochitest/file_browserElement_XFrameOptionsAllowFrom.sjs';
+
+var iframe1 = document.createElement('iframe');
+iframe1.height = '300px';
+var iframe2 = document.createElement('iframe');
+iframe2.height = '300px';
+document.body.appendChild(iframe1);
+
+iframe1.addEventListener('load', function iframe1Load() {
+  iframe1.removeEventListener('load', iframe1Load);
+  // This causes our embedder to take a screenshot (and blocks until the
+  // screenshot is completed).
+  var iframe2Loaded = false;
+  iframe2.addEventListener('load', function iframe2Load() {
+    iframe2.removeEventListener('load', iframe2Load);
+    iframe2Loaded = true;
+    alert('finish');
+  });
+
+  document.body.appendChild(iframe2);
+  iframe2.src = frame_src;
+});
+
+
+iframe1.src = frame_src + '?iframe1';
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_XFrameOptionsAllowFrom.sjs b/dom/browser-element/mochitest/file_browserElement_XFrameOptionsAllowFrom.sjs
new file mode 100644
index 0000000000..4a5dbaaced
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_XFrameOptionsAllowFrom.sjs
@@ -0,0 +1,16 @@
+function handleRequest(request, response)
+{
+  var content = 'step 1';
+  if (request.queryString == "iframe1") {
+      response.setHeader("X-Frame-Options", "Allow-From http://mochi.test:8888/")
+      content = 'finish';
+  } else {
+      response.setHeader("X-Frame-Options", "Allow-From http://example.com")
+  }
+
+  response.setHeader("Content-Type", "text/html", false);
+
+  // Tests rely on this page not being entirely blank, because they take
+  // screenshots to determine whether this page was loaded.
+  response.write("<html><body>XFrameOptions test<script>alert('" + content + "')</script></body></html>");
+}
diff --git a/dom/browser-element/mochitest/file_browserElement_XFrameOptionsDeny.html b/dom/browser-element/mochitest/file_browserElement_XFrameOptionsDeny.html
new file mode 100644
index 0000000000..338275aa33
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_XFrameOptionsDeny.html
@@ -0,0 +1,57 @@
+<html>
+<body>
+
+<!-- Try to load in a frame a page which sends "X-Frame-Options: DENY", and a
+     cross-origin page which sends "X-Frame-Options: SAMEORIGIN". -->
+
+<script>
+
+// Make sure these iframes aren't too tall; they both need to fit inside the
+// iframe this page is contained in, without scrolling, in order for the test's
+// screenshots to work properly.
+
+var iframe1 = document.createElement('iframe');
+iframe1.height = '300px';
+var iframe2 = document.createElement('iframe');
+iframe2.height = '300px';
+document.body.appendChild(iframe1);
+document.body.appendChild(iframe2);
+
+// This causes our embedder to take a screenshot (and blocks until the
+// screenshot is completed).
+alert('step 1');
+
+// Wait for both iframes to load.
+
+var iframe1Loaded = false;
+iframe1.addEventListener('load', function iframe1Load() {
+  iframe1.removeEventListener('load', iframe1Load);
+  iframe1Loaded = true;
+  waitForBothLoads();
+});
+
+var iframe2Loaded = false;
+iframe2.addEventListener('load', function iframe2Load() {
+  iframe2.removeEventListener('load', iframe2Load);
+  iframe2Loaded = true;
+  waitForBothLoads();
+});
+
+function waitForBothLoads() {
+  if (iframe1Loaded && iframe2Loaded) {
+    setTimeout(function() {
+      // This causes our embedder to take another screenshot.
+      alert('step 2');
+    }, 0);
+  }
+}
+
+iframe1.src = 'file_browserElement_XFrameOptions.sjs?DENY';
+
+// Load iframe2 with the origin of our parent.  Since we have a different
+// origin and are inside <iframe mozbrowser>, this should not load.
+iframe2.src = 'http://mochi.test:8888/tests/dom/browser-element/mochitest/file_browserElement_XFrameOptions.sjs?SAMEORIGIN';
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_browserElement_XFrameOptionsSameOrigin.html b/dom/browser-element/mochitest/file_browserElement_XFrameOptionsSameOrigin.html
new file mode 100644
index 0000000000..11e75f1417
--- /dev/null
+++ b/dom/browser-element/mochitest/file_browserElement_XFrameOptionsSameOrigin.html
@@ -0,0 +1,5 @@
+<html>
+<body>
+<iframe src='file_browserElement_XFrameOptions.sjs?SAMEORIGIN'></iframe>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_bug709759.sjs b/dom/browser-element/mochitest/file_bug709759.sjs
new file mode 100644
index 0000000000..ce78b188b3
--- /dev/null
+++ b/dom/browser-element/mochitest/file_bug709759.sjs
@@ -0,0 +1,5 @@
+function handleRequest(request, response)
+{
+  response.processAsync();
+  response.setHeader("Content-Type", "image/jpeg", false);
+}
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/file_bug741717.sjs b/dom/browser-element/mochitest/file_bug741717.sjs
new file mode 100644
index 0000000000..bde9ddfaed
--- /dev/null
+++ b/dom/browser-element/mochitest/file_bug741717.sjs
@@ -0,0 +1,27 @@
+function handleRequest(request, response)
+{
+  function etag(count) {
+    return '"anetag' + count + '"';
+  }
+
+  var count = parseInt(getState('count'));
+  if (!count)
+    count = 0;
+
+  // reload(false) will make a request with If-None-Match headers
+  var ifNoneMatch = request.hasHeader("If-None-Match") ?
+    request.getHeader("If-None-Match") : "";
+
+  if (ifNoneMatch === etag(count)) {
+    response.setStatusLine(request.httpVersion, "304", "Not Modified");
+    return;
+  }
+
+  count++;
+  setState('count', count + '');
+
+  response.setHeader('Content-Type', 'text/html', false);
+  response.setHeader('Cache-Control', 'public, max-age=3600', false);
+  response.setHeader("ETag", etag(count), false);
+  response.write('<html><body>' + count + '</body></html>');
+}
diff --git a/dom/browser-element/mochitest/file_download_bin.sjs b/dom/browser-element/mochitest/file_download_bin.sjs
new file mode 100644
index 0000000000..fd394ea0a7
--- /dev/null
+++ b/dom/browser-element/mochitest/file_download_bin.sjs
@@ -0,0 +1,4 @@
+function handleRequest(request, response) {
+  response.setHeader("Content-Type", "application/octet-stream", false);
+  response.write("BIN");
+}
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/file_empty.html b/dom/browser-element/mochitest/file_empty.html
new file mode 100644
index 0000000000..ed21305b99
--- /dev/null
+++ b/dom/browser-element/mochitest/file_empty.html
@@ -0,0 +1,14 @@
+<html>
+<body>
+
+<!-- Tests rely on the fact that there's an element in here called 'url' and
+     that there's visible text on the page. -->
+
+Aloha!  My URL is <span id='url'></span>.
+
+<script>
+document.getElementById('url').innerHTML = window.location;
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_empty_script.js b/dom/browser-element/mochitest/file_empty_script.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/dom/browser-element/mochitest/file_empty_script.js
diff --git a/dom/browser-element/mochitest/file_focus.html b/dom/browser-element/mochitest/file_focus.html
new file mode 100644
index 0000000000..0bd3f7aa44
--- /dev/null
+++ b/dom/browser-element/mochitest/file_focus.html
@@ -0,0 +1,24 @@
+<html>
+<body>
+
+Aloha!  My URL is <span id='url'></span>.
+<script>
+document.getElementById('url').innerHTML = window.location;
+</script>
+
+<script>
+  // The input element is getting synthesized key events and will prevent
+  // default on the first ESC keydown event.
+
+  var alreadyBlocked = false;
+
+  addEventListener('keydown', function(e) {
+    if (e.keyCode == SpecialPowers.Ci.nsIDOMKeyEvent.DOM_VK_ESCAPE &&
+        alreadyBlocked == false) {
+      alreadyBlocked = true;
+      e.preventDefault();
+    }
+  });
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_http_401_response.sjs b/dom/browser-element/mochitest/file_http_401_response.sjs
new file mode 100644
index 0000000000..c40a252c3f
--- /dev/null
+++ b/dom/browser-element/mochitest/file_http_401_response.sjs
@@ -0,0 +1,16 @@
+function handleRequest(request, response)
+{
+  var auth = "";
+  try {
+    auth = request.getHeader("Authorization");
+  } catch(e) {}
+
+  if (auth == "Basic aHR0cHVzZXI6aHR0cHBhc3M=") {
+    response.setStatusLine("1.1", 200, "OK");
+    response.write("<html><head><title>http auth success</title></head><html>");
+  } else {
+    response.setStatusLine("1.1", 401, "Http authentication required");
+    response.setHeader("WWW-Authenticate", "Basic realm=\"http_realm\"");
+    response.write("<html><head><title>http auth failed</title></head><html>");
+  }
+}
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/file_http_407_response.sjs b/dom/browser-element/mochitest/file_http_407_response.sjs
new file mode 100644
index 0000000000..da2f27620d
--- /dev/null
+++ b/dom/browser-element/mochitest/file_http_407_response.sjs
@@ -0,0 +1,16 @@
+function handleRequest(request, response)
+{
+  var auth = "";
+  try {
+    auth = request.getHeader("Proxy-Authorization");
+  } catch(e) {}
+
+  if (auth == "Basic cHJveHl1c2VyOnByb3h5cGFzcw==") {
+    response.setStatusLine("1.1", 200, "OK");
+    response.write("<html><head><title>http auth success</title></head><html>");
+  } else {
+    response.setStatusLine("1.1", 407, "Proxy Authentication Required");
+    response.setHeader("Proxy-Authenticate", "Basic realm=\"http_realm\"");
+    response.write("<html><head><title>http auth failed</title></head><html>");
+  }
+}
diff --git a/dom/browser-element/mochitest/file_illegal_web_manifest.html b/dom/browser-element/mochitest/file_illegal_web_manifest.html
new file mode 100644
index 0000000000..d9075b3fc6
--- /dev/null
+++ b/dom/browser-element/mochitest/file_illegal_web_manifest.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<meta charset=utf-8>
+<head>
+<!-- FIXME: we should keep file:// here ... -->
+<link rel="manifest" href="sshfs://this_is_not_allowed!">
+</head>
+<h1>Support Page for Web Manifest Tests</h1>
diff --git a/dom/browser-element/mochitest/file_post_request.html b/dom/browser-element/mochitest/file_post_request.html
new file mode 100644
index 0000000000..773193067c
--- /dev/null
+++ b/dom/browser-element/mochitest/file_post_request.html
@@ -0,0 +1,15 @@
+<html>
+<head>
+  <script>
+  addEventListener('load', function() {
+    document.getElementsByTagName('form')[0].submit();
+  });
+  </script>
+</head>
+<body>
+  <form action="file_empty.html" method="POST">
+    <input type="text" name="postvalue" value="I am a test string!!" />
+    <input type="submit" />
+  </form>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/file_web_manifest.html b/dom/browser-element/mochitest/file_web_manifest.html
new file mode 100644
index 0000000000..783da0f47d
--- /dev/null
+++ b/dom/browser-element/mochitest/file_web_manifest.html
@@ -0,0 +1,6 @@
+<!doctype html>
+<meta charset=utf-8>
+<head>
+<link rel="manifest" href="file_web_manifest.json">
+</head>
+<h1>Support Page for Web Manifest Tests</h1>
diff --git a/dom/browser-element/mochitest/file_web_manifest.json b/dom/browser-element/mochitest/file_web_manifest.json
new file mode 100644
index 0000000000..57d0c3d42e
--- /dev/null
+++ b/dom/browser-element/mochitest/file_web_manifest.json
@@ -0,0 +1 @@
+{"name": "pass"}
diff --git a/dom/browser-element/mochitest/file_wyciwyg.html b/dom/browser-element/mochitest/file_wyciwyg.html
new file mode 100644
index 0000000000..f53216144b
--- /dev/null
+++ b/dom/browser-element/mochitest/file_wyciwyg.html
@@ -0,0 +1,14 @@
+<html>
+<head>
+<title>test</title>
+<script type="text/javascript">
+addEventListener('load', function() {
+  window.setTimeout(function() {
+    document.write("test");
+  }, 0);
+});
+</script>
+</head>
+<body>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/iframe_file_audio.html b/dom/browser-element/mochitest/iframe_file_audio.html
new file mode 100644
index 0000000000..605ce2870c
--- /dev/null
+++ b/dom/browser-element/mochitest/iframe_file_audio.html
@@ -0,0 +1,5 @@
+<html>
+<body>
+<iframe src="file_audio.html"></iframe>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/mochitest-oop.ini b/dom/browser-element/mochitest/mochitest-oop.ini
new file mode 100644
index 0000000000..70d38c5321
--- /dev/null
+++ b/dom/browser-element/mochitest/mochitest-oop.ini
@@ -0,0 +1,135 @@
+[DEFAULT]
+# Both the "inproc" and "oop" versions of OpenMixedProcess open remote frames,
+# so we don't run that test on platforms which don't support OOP tests.
+skip-if = os == "android" || e10s
+support-files =
+  browserElement_OpenMixedProcess.js
+  file_browserElement_ExecuteScript.html
+  file_browserElement_OpenMixedProcess.html
+  browserElement_ExecuteScript.js
+  browserElement_Find.js
+  browserElement_OpenTab.js
+
+[test_browserElement_oop_AudioChannelSeeking.html]
+tags = audiochannel
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_Viewmode.html]
+[test_browserElement_oop_ThemeColor.html]
+[test_browserElement_inproc_ErrorSecurity.html]
+[test_browserElement_inproc_OpenMixedProcess.html]
+disabled = disabled for bug 1266035
+[test_browserElement_oop_Alert.html]
+[test_browserElement_oop_AlertInFrame.html]
+[test_browserElement_oop_AudioChannelMutedByDefault.html]
+tags = audiochannel
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_Auth.html]
+[test_browserElement_oop_BackForward.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_BadScreenshot.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_BrowserWindowResize.html]
+[test_browserElement_oop_Close.html]
+[test_browserElement_oop_CookiesNotThirdParty.html]
+[test_browserElement_oop_CopyPaste.html]
+subsuite = clipboard
+[test_browserElement_oop_DOMRequestError.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_DataURI.html]
+[test_browserElement_oop_DocumentFirstPaint.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_Download.html]
+disabled = bug 1022281
+[test_browserElement_oop_ErrorSecurity.html]
+[test_browserElement_oop_ExecuteScript.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_Find.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_FirstPaint.html]
+[test_browserElement_oop_ForwardName.html]
+[test_browserElement_oop_FrameWrongURI.html]
+[test_browserElement_oop_GetScreenshot.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_GetScreenshotDppx.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_Iconchange.html]
+[test_browserElement_oop_LoadEvents.html]
+[test_browserElement_oop_Manifestchange.html]
+[test_browserElement_oop_Metachange.html]
+[test_browserElement_oop_NoAudioTrack.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_AudioPlayback.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_OpenMixedProcess.html]
+disabled = disabled for bug 1266035
+[test_browserElement_oop_OpenNamed.html]
+[test_browserElement_oop_OpenWindow.html]
+[test_browserElement_oop_OpenWindowDifferentOrigin.html]
+[test_browserElement_oop_OpenWindowInFrame.html]
+[test_browserElement_oop_OpenWindowRejected.html]
+[test_browserElement_oop_Opensearch.html]
+[test_browserElement_oop_OpenTab.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_PrivateBrowsing.html]
+[test_browserElement_oop_PromptCheck.html]
+[test_browserElement_oop_PromptConfirm.html]
+[test_browserElement_oop_Proxy.html]
+[test_browserElement_oop_PurgeHistory.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_Reload.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_ReloadPostRequest.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_RemoveBrowserElement.html]
+[test_browserElement_oop_ScrollEvent.html]
+[test_browserElement_oop_SecurityChange.html]
+skip-if = toolkit == 'android' #TIMED_OUT, bug 766586
+[test_browserElement_oop_SendEvent.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_SetInputMethodActive.html]
+# skip-if = (os == "android")
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_SetVisible.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_SetVisibleFrames.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_SetVisibleFrames2.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_Stop.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_TargetBlank.html]
+[test_browserElement_oop_TargetTop.html]
+[test_browserElement_oop_Titlechange.html]
+[test_browserElement_oop_TopBarrier.html]
+[test_browserElement_oop_VisibilityChange.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_XFrameOptions.html]
+[test_browserElement_oop_XFrameOptionsAllowFrom.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+# bug 1189592
+skip-if = asan
+[test_browserElement_oop_XFrameOptionsDeny.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_XFrameOptionsSameOrigin.html]
+# Disabled until bug 930449 makes it stop timing out
+[test_browserElement_oop_ContextmenuEvents.html]
+disabled = bug 930449
+# Disabled until bug 924771 makes them stop timing out
+[test_browserElement_oop_CloseFromOpener.html]
+disabled = bug 924771
+[test_browserElement_oop_ExposableURI.html]
+disabled = bug 924771
+[test_browserElement_oop_GetContentDimensions.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_AudioChannel.html]
+tags = audiochannel
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_AudioChannel_nested.html]
+tags = audiochannel
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_getWebManifest.html]
+disabled = Disabling some OOP tests for WebIDL scope changes
+[test_browserElement_oop_OpenWindowEmpty.html]
+[test_browserElement_oop_ActiveStateChange.html]
+tags = audiochannel
+disabled = Disabling some OOP tests for WebIDL scope changes
diff --git a/dom/browser-element/mochitest/mochitest.ini b/dom/browser-element/mochitest/mochitest.ini
new file mode 100644
index 0000000000..e1799f93ff
--- /dev/null
+++ b/dom/browser-element/mochitest/mochitest.ini
@@ -0,0 +1,159 @@
+[DEFAULT]
+skip-if = e10s
+support-files =
+  audio.ogg
+  ../../../dom/media/test/short-video.ogv
+  async.js
+  browserElementTestHelpers.js
+  browserElement_Alert.js
+  browserElement_AlertInFrame.js
+  browserElement_Auth.js
+  browserElement_Viewmode.js
+  browserElement_ThemeColor.js
+  browserElement_BrowserWindowNamespace.js
+  browserElement_BrowserWindowResize.js
+  browserElement_Close.js
+  browserElement_CloseFromOpener.js
+  browserElement_ContextmenuEvents.js
+  browserElement_CookiesNotThirdParty.js
+  browserElement_CopyPaste.js
+  browserElement_DataURI.js
+  browserElement_Download.js
+  browserElement_ErrorSecurity.js
+  browserElement_ExposableURI.js
+  browserElement_FirstPaint.js
+  browserElement_ForwardName.js
+  browserElement_FrameWrongURI.js
+  browserElement_Iconchange.js
+  browserElement_LoadEvents.js
+  browserElement_Manifestchange.js
+  browserElement_Metachange.js
+  browserElement_NextPaint.js
+  browserElement_OpenNamed.js
+  browserElement_OpenTab.js
+  browserElement_OpenWindow.js
+  browserElement_OpenWindowDifferentOrigin.js
+  browserElement_OpenWindowEmpty.js
+  browserElement_OpenWindowInFrame.js
+  browserElement_OpenWindowRejected.js
+  browserElement_Opensearch.js
+  browserElement_PrivateBrowsing.js
+  browserElement_PromptCheck.js
+  browserElement_PromptConfirm.js
+  browserElement_Proxy.js
+  browserElement_Reload.js
+  browserElement_RemoveBrowserElement.js
+  browserElement_ScrollEvent.js
+  browserElement_SecurityChange.js
+  browserElement_TargetBlank.js
+  browserElement_TargetTop.js
+  browserElement_Titlechange.js
+  browserElement_TopBarrier.js
+  browserElement_XFrameOptions.js
+  browserElement_XFrameOptionsAllowFrom.js
+  browserElement_XFrameOptionsDeny.js
+  browserElement_XFrameOptionsSameOrigin.js
+  file_browserElement_AlertInFrame.html
+  file_browserElement_AlertInFrame_Inner.html
+  file_browserElement_Viewmode.html
+  file_browserElement_ThemeColor.html
+  file_browserElement_BrowserWindowNamespace.html
+  file_browserElement_CloseFromOpener.html
+  file_browserElement_CookiesNotThirdParty.html
+  file_browserElement_ForwardName.html
+  file_browserElement_FrameWrongURI.html
+  file_browserElement_LoadEvents.html
+  file_browserElement_Metachange.sjs
+  file_browserElement_NextPaint.html
+  file_browserElement_Open1.html
+  file_browserElement_Open2.html
+  file_browserElement_OpenNamed.html
+  file_browserElement_OpenNamed2.html
+  file_browserElement_OpenWindowDifferentOrigin.html
+  file_browserElement_OpenWindowEmpty.html
+  file_browserElement_OpenWindowInFrame.html
+  file_browserElement_OpenWindowRejected.html
+  file_browserElement_PrivateBrowsing.html
+  file_browserElement_SecurityChange.html
+  file_browserElement_TargetBlank.html
+  file_browserElement_TargetTop.html
+  file_browserElement_XFrameOptions.sjs
+  file_browserElement_XFrameOptionsAllowFrom.html
+  file_browserElement_XFrameOptionsAllowFrom.sjs
+  file_browserElement_XFrameOptionsDeny.html
+  file_browserElement_XFrameOptionsSameOrigin.html
+  file_bug741717.sjs
+  file_download_bin.sjs
+  file_empty.html
+  file_empty_script.js
+  file_focus.html
+  file_http_401_response.sjs
+  file_http_407_response.sjs
+  file_wyciwyg.html
+  file_audio.html
+  iframe_file_audio.html
+  file_web_manifest.html
+  file_web_manifest.json
+  file_illegal_web_manifest.html
+  noaudio.webm
+
+# Note: browserElementTestHelpers.js looks at the test's filename to determine
+# whether the test should be OOP.  "_oop_" signals OOP, "_inproc_" signals in
+# process.  Default is OOP.
+[test_browserElement_NoAttr.html]
+[test_browserElement_NoPref.html]
+[test_browserElement_NoPermission.html]
+[test_browserElement_inproc_Alert.html]
+[test_browserElement_inproc_Viewmode.html]
+[test_browserElement_inproc_ThemeColor.html]
+[test_browserElement_inproc_AlertInFrame.html]
+[test_browserElement_inproc_Auth.html]
+[test_browserElement_inproc_BrowserWindowNamespace.html]
+[test_browserElement_inproc_BrowserWindowResize.html]
+[test_browserElement_inproc_Close.html]
+[test_browserElement_inproc_CloseFromOpener.html]
+[test_browserElement_inproc_ContextmenuEvents.html]
+[test_browserElement_inproc_CookiesNotThirdParty.html]
+[test_browserElement_inproc_CopyPaste.html]
+subsuite = clipboard
+skip-if = (os == "android") # Disabled on Android, see bug 1230421
+[test_browserElement_inproc_DataURI.html]
+[test_browserElement_inproc_Download.html]
+disabled = bug 1022281
+[test_browserElement_inproc_ExposableURI.html]
+[test_browserElement_inproc_FirstPaint.html]
+[test_browserElement_inproc_ForwardName.html]
+[test_browserElement_inproc_FrameWrongURI.html]
+[test_browserElement_inproc_Iconchange.html]
+[test_browserElement_inproc_LoadEvents.html]
+[test_browserElement_inproc_Manifestchange.html]
+[test_browserElement_inproc_Metachange.html]
+[test_browserElement_inproc_OpenNamed.html]
+[test_browserElement_inproc_OpenTab.html]
+disabled = won't work as Firefox desktop will intercept ctrl-click
+[test_browserElement_inproc_OpenWindow.html]
+[test_browserElement_inproc_OpenWindowDifferentOrigin.html]
+[test_browserElement_inproc_OpenWindowInFrame.html]
+[test_browserElement_inproc_OpenWindowRejected.html]
+[test_browserElement_inproc_Opensearch.html]
+[test_browserElement_inproc_PrivateBrowsing.html]
+[test_browserElement_inproc_PromptCheck.html]
+[test_browserElement_inproc_PromptConfirm.html]
+[test_browserElement_inproc_Proxy.html]
+[test_browserElement_inproc_RemoveBrowserElement.html]
+[test_browserElement_inproc_ScrollEvent.html]
+[test_browserElement_inproc_SecurityChange.html]
+[test_browserElement_inproc_TargetBlank.html]
+[test_browserElement_inproc_TargetTop.html]
+[test_browserElement_inproc_Titlechange.html]
+[test_browserElement_inproc_TopBarrier.html]
+[test_browserElement_inproc_XFrameOptions.html]
+[test_browserElement_inproc_XFrameOptionsAllowFrom.html]
+[test_browserElement_inproc_XFrameOptionsDeny.html]
+[test_browserElement_inproc_XFrameOptionsSameOrigin.html]
+[test_browserElement_oop_NextPaint.html]
+# Disabled due to https://bugzilla.mozilla.org/show_bug.cgi?id=774100
+disabled = temp disabling some OOP tests for WebIDL scope changes
+[test_browserElement_inproc_Reload.html]
+disabled = bug 774100
+[test_browserElement_inproc_OpenWindowEmpty.html]
diff --git a/dom/browser-element/mochitest/noaudio.webm b/dom/browser-element/mochitest/noaudio.webm
new file mode 100644
index 0000000000..9207017fb6
--- /dev/null
+++ b/dom/browser-element/mochitest/noaudio.webm
diff --git a/dom/browser-element/mochitest/priority/chrome.ini b/dom/browser-element/mochitest/priority/chrome.ini
new file mode 100644
index 0000000000..e1852f6ff9
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/chrome.ini
@@ -0,0 +1,19 @@
+[DEFAULT]
+# Good luck running these tests on anything but desktop Linux.
+run-if = os == 'linux' && buildapp == 'browser' && !e10s
+support-files =
+  file_Audio.html
+  file_MultipleFrames.html
+  file_NestedFramesOuter.html
+  file_WebGLContextLost.html
+  silence.ogg
+  !/dom/browser-element/mochitest/browserElementTestHelpers.js
+  !/dom/browser-element/mochitest/file_empty.html
+
+[test_Activity.html]
+[test_Audio.html]
+[test_Background.html]
+[test_Keyboard.html]
+[test_MultipleFrames.html]
+[test_NestedFrames.html]
+[test_Visibility.html]
diff --git a/dom/browser-element/mochitest/priority/file_Audio.html b/dom/browser-element/mochitest/priority/file_Audio.html
new file mode 100644
index 0000000000..97f4dc64d4
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/file_Audio.html
@@ -0,0 +1,19 @@
+<html>
+<body>
+
+<script>
+addEventListener('load', function() {
+  setTimeout(function() {
+    var a = document.getElementById('audio');
+    a.onplay = function() {
+      alert('onplay');
+    };
+    a.play();
+  }, 0);
+});
+</script>
+
+<audio id='audio' loop src='silence.ogg'>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/file_HighPriority.html b/dom/browser-element/mochitest/priority/file_HighPriority.html
new file mode 100644
index 0000000000..dc7197bba4
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/file_HighPriority.html
@@ -0,0 +1,20 @@
+<!DOCTYPE HTML>
+<html>
+<body>
+
+<script>
+var lock = navigator.requestWakeLock('high-priority');
+alert('step0');
+
+lock.unlock();
+alert('step1');
+
+lock = navigator.requestWakeLock('cpu');
+alert('step2');
+
+lock.unlock();
+alert('step3');
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/file_MultipleFrames.html b/dom/browser-element/mochitest/priority/file_MultipleFrames.html
new file mode 100644
index 0000000000..b3b56f5608
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/file_MultipleFrames.html
@@ -0,0 +1,14 @@
+<html>
+<body>
+<p>file_MultipleFrames.html</p>
+
+<script>
+addEventListener('load', function() {
+  setTimeout(function() {
+    window.open('../file_empty.html');
+  }, 0);
+});
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/file_NestedFramesOuter.html b/dom/browser-element/mochitest/priority/file_NestedFramesOuter.html
new file mode 100644
index 0000000000..e4378935f2
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/file_NestedFramesOuter.html
@@ -0,0 +1,20 @@
+<html>
+<body>
+<p>file_NestedFramesOuter.html</p>
+<script>
+
+addEventListener('load', function() {
+  setTimeout(createIframe, 0);
+});
+
+function createIframe()
+{
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.src = location.hash.substr(1);
+  document.body.appendChild(iframe);
+}
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/file_WebGLContextLost.html b/dom/browser-element/mochitest/priority/file_WebGLContextLost.html
new file mode 100644
index 0000000000..bd5c84f11a
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/file_WebGLContextLost.html
@@ -0,0 +1,22 @@
+<html>
+<body>
+file_WebGLContextLost.html
+<canvas id='canvas'></canvas>
+
+<script>
+function runTest()
+{
+  var canvas = document.getElementById('canvas');
+  canvas.addEventListener('webglcontextlost', function() {
+    alert('webglcontextlost');
+  });
+
+  var context = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
+  context.viewport(0, 0, 10, 10);
+  alert('ready');
+}
+
+addEventListener('load', function() { setTimeout(runTest, 0) });
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/mochitest.ini b/dom/browser-element/mochitest/priority/mochitest.ini
new file mode 100644
index 0000000000..8118aedd7f
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/mochitest.ini
@@ -0,0 +1,19 @@
+[DEFAULT]
+# Good luck running these tests on anything but desktop Linux.
+run-if = os == 'linux' && buildapp == 'browser' && !e10s
+support-files =
+  file_HighPriority.html
+  silence.ogg
+  !/dom/browser-element/mochitest/browserElementTestHelpers.js
+  !/dom/browser-element/mochitest/file_empty.html
+
+# Note: ../browserElementTestHelpers.js makes all tests in this directory OOP,
+# because testing the process-priority manager without OOP frames does not make
+# much sense.
+
+[test_Simple.html]
+[test_HighPriority.html]
+[test_Preallocated.html]
+disabled = bug 968604, bug 987164
+[test_WebGLContextLost.html]
+disabled = bug 865844
diff --git a/dom/browser-element/mochitest/priority/silence.ogg b/dom/browser-element/mochitest/priority/silence.ogg
new file mode 100644
index 0000000000..6e0b352a32
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/silence.ogg
diff --git a/dom/browser-element/mochitest/priority/test_Activity.html b/dom/browser-element/mochitest/priority/test_Activity.html
new file mode 100644
index 0000000000..ae4049d964
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_Activity.html
@@ -0,0 +1,62 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that calling setVisible("false") on an iframe that has an open activity
+causes its priority to change.
+-->
+<head>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  var os = SpecialPowers.Cc["@mozilla.org/observer-service;1"]
+                        .getService(SpecialPowers.Ci.nsIObserverService);
+  var iframe = document.createElement("iframe");
+  iframe.setAttribute("mozbrowser", true);
+
+  iframe.src = browserElementTestHelpers.emptyPage1;
+
+  var childID = null;
+  Promise.all([
+    expectOnlyOneProcessCreated("FOREGROUND").then(function(chid) {
+      childID = chid;
+    }),
+    expectMozbrowserEvent(iframe, "loadend")
+  ]).then(function() {
+    var p = expectPriorityChange(childID, "BACKGROUND_PERCEIVABLE");
+
+    // We simulate opening an activity
+    os.notifyObservers(null, "activity-opened", childID);
+
+    // We wait until mozbrowserloadend before calling setVisible, because
+    // setVisible isn't available until mozbrowser has loaded.  In practice, that
+    // means we can call setVisible once we've gotten /any/ mozbrowser event.
+    iframe.setVisible(false);
+    return p;
+  }).then(function() {
+    var p = expectPriorityChange(childID, "BACKGROUND");
+
+    // Now we simulate closing an activity
+    os.notifyObservers(null, "activity-closed", childID);
+
+    return p;
+  }).then(SimpleTest.finish);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener("testready", runTest);
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_Audio.html b/dom/browser-element/mochitest/priority/test_Audio.html
new file mode 100644
index 0000000000..d39b1c9f3f
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_Audio.html
@@ -0,0 +1,53 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that frames playing audio get BACKGROUND_PERCEIVABLE priority.
+-->
+<head>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.src = 'file_Audio.html';
+
+  var childID = null;
+  Promise.all([
+    expectOnlyOneProcessCreated("FOREGROUND").then(function(chid) {
+      childID = chid;
+    }),
+    expectMozbrowserEvent(iframe, 'loadend'),
+    expectMozbrowserEvent(iframe, 'showmodalprompt').then(function(e) {
+      is(e.detail.message, 'onplay', 'showmodalprompt message');
+    })
+  ]).then(function() {
+    // Send the child process into the background.  Because it's playing audio,
+    // it should get priority BACKGROUND_PERCEIVABLE, not vanilla BACKGROUND.
+    var p = expectPriorityChange(childID, 'BACKGROUND_PERCEIVABLE');
+    iframe.setVisible(false);
+    return p;
+  }).then(function() {
+    var p = expectPriorityChange(childID, 'FOREGROUND');
+    iframe.setVisible(true);
+    return p;
+  }).then(SimpleTest.finish);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_Background.html b/dom/browser-element/mochitest/priority/test_Background.html
new file mode 100644
index 0000000000..59eb16863c
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_Background.html
@@ -0,0 +1,53 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that calling setVisible('false') on an iframe causes its visibility to
+change.
+-->
+<head>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+
+  iframe.src = browserElementTestHelpers.emptyPage1;
+
+  var childID = null;
+  Promise.all([
+    expectOnlyOneProcessCreated('FOREGROUND').then(function(chid) {
+      childID = chid;
+    }),
+    expectMozbrowserEvent(iframe, 'loadend')
+  ]).then(function() {
+    var p = expectPriorityChange(childID, 'BACKGROUND');
+
+    // We wait until mozbrowserloadend before calling setVisible, because
+    // setVisible isn't available until mozbrowser has loaded.  In practice, that
+    // means we can call setVisible once we've gotten /any/ mozbrowser event.
+    iframe.setVisible(false);
+    return p;
+  }).then(function() {
+    var p = expectPriorityChange(childID, 'FOREGROUND');
+    iframe.setVisible(true);
+  }).then(SimpleTest.finish);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_HighPriority.html b/dom/browser-element/mochitest/priority/test_HighPriority.html
new file mode 100644
index 0000000000..d3396d65b6
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_HighPriority.html
@@ -0,0 +1,133 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that frames with mozapptype=critical which hold the "high-priority" or
+"cpu" wake locks get elevated process priority.
+-->
+<head>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  // To test bug 870480, run this test while holding the CPU and high-priority
+  // wake locks.  Without the fix for bug 870480, we won't set the priority of
+  // the child process if the main process holds these wake locks and the test
+  // will hang.
+  navigator.requestWakeLock('cpu');
+  navigator.requestWakeLock('high-priority');
+
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.setAttribute('mozapptype', 'critical');
+  iframe.src = 'file_HighPriority.html';
+
+  // We expect the following to happen:
+  //
+  // - Process is created.
+  // - Its priority is set to FOREGROUND (when the process starts).
+  // - wait_alert('step0', FOREGROUND_HIGH)
+  // - wait_alert('step1', FOREGROUND)
+  // - wait_alert('step2', FOREGROUND_HIGH)
+  //
+  // Where wait_alert(M, P) means that we expect the subprocess to
+  //   * do alert(M) and
+  //   * be set to priority P
+  // in some order.  If the alert occurs before the priority change, we block
+  // the alert until we observe the priority change.  So the subprocess only
+  // has to do
+  //
+  //   // set priority to FOREGROUND_HIGH
+  //   alert('step0');
+  //   // set priority to FOREGROUND
+  //   alert('step1');
+  //
+  // etc.
+
+  var childID = null;
+  var alertTimes = [];
+
+  // Return a promise that's resolved once the child process calls alert() and
+  // we get a priority change, in some order.
+  //
+  // We check that the text of the alert is |"step" + index|.
+  //
+  // If gracePeriod is given, we check that the priority change occurred at
+  // least gracePeriod ms since the alert from the previous step (with a fudge
+  // factor to account for inaccurate timers).
+  function expectAlertAndPriorityChange(index, priority, /* optional */ gracePeriod) {
+    function checkAlertInfo(e) {
+      is(e.detail.message, 'step' + index, 'alert() number ' + index);
+      alertTimes.push(new Date());
+
+      // Block the alert; we'll unblock it by calling e.detail.unblock() later.
+      e.preventDefault();
+      return Promise.resolve(e.detail.unblock);
+    }
+
+    function checkGracePeriod() {
+      if (gracePeriod) {
+        var msSinceLastAlert = (new Date()) - alertTimes[index - 1];
+
+        // 50ms fudge factor.  This test is set up so that, if nsITimers are
+        // accurate, we don't need any fudge factor.  Unfortunately our timers
+        // are not accurate!  There's little we can do here except fudge.
+        // Thankfully all we're trying to test is that we get /some/ delay; the
+        // exact amount of delay isn't so important.
+        ok(msSinceLastAlert + 50 >= gracePeriod,
+           msSinceLastAlert + "ms since last alert >= (" + gracePeriod + " - 50ms)");
+      }
+    }
+
+    return Promise.all([
+      new Promise(function(resolve, reject) {
+        iframe.addEventListener('mozbrowsershowmodalprompt', function check(e) {
+          iframe.removeEventListener('mozbrowsershowmodalprompt', check);
+          resolve(checkAlertInfo(e));
+        });
+      }),
+      expectPriorityChange(childID, priority).then(checkGracePeriod)
+    ]).then(function(results) {
+      // checkAlertInfo returns the function to call to unblock the alert.
+      // It comes to us as the first element of the results array.
+      results[0]();
+    });
+  }
+
+  expectProcessCreated('FOREGROUND').then(function(chid) {
+    childID = chid;
+  }).then(function() {
+    return expectAlertAndPriorityChange(0, 'FOREGROUND_HIGH');
+  }).then(function() {
+    return expectAlertAndPriorityChange(1, 'FOREGROUND', priorityChangeGracePeriod);
+  }).then(function() {
+    return expectAlertAndPriorityChange(2, 'FOREGROUND_HIGH');
+  }).then(function() {
+    return expectAlertAndPriorityChange(3, 'FOREGROUND', priorityChangeGracePeriod);
+  }).then(SimpleTest.finish);
+
+  document.body.appendChild(iframe);
+}
+
+const priorityChangeGracePeriod = 100;
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv(
+    {set: [['dom.ipc.processPriorityManager.backgroundGracePeriodMS',
+            priorityChangeGracePeriod],
+           ['dom.wakelock.enabled', true]]},
+    runTest);
+});
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_Keyboard.html b/dom/browser-element/mochitest/priority/test_Keyboard.html
new file mode 100644
index 0000000000..a36f954bad
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_Keyboard.html
@@ -0,0 +1,54 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that frames with mozapptype=inputmethod gets the keyboard-specific
+priority level when in the foreground.
+-->
+<head>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.setAttribute('mozapptype', 'inputmethod');
+  iframe.src = browserElementTestHelpers.emptyPage1;
+
+  var childID = null;
+  Promise.all([
+    expectOnlyOneProcessCreated('FOREGROUND_KEYBOARD').then(function(chid) {
+      childID = chid;
+    }),
+    expectMozbrowserEvent(iframe, 'loadend')
+  ]).then(function() {
+    var p = expectPriorityChange(childID, 'BACKGROUND');
+
+    /* We wait until mozbrowserloadend before calling setVisible, because
+     * setVisible isn't available until mozbrowser has loaded.  In practice,
+     * that means we can call setVisible once we've gotten /any/ mozbrowser
+     * event. */
+    iframe.setVisible(false);
+    return p;
+  }).then(function() {
+    var p = expectPriorityChange(childID, 'FOREGROUND_KEYBOARD');
+    iframe.setVisible(true);
+  }).then(SimpleTest.finish);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_MultipleFrames.html b/dom/browser-element/mochitest/priority/test_MultipleFrames.html
new file mode 100644
index 0000000000..57d9563e73
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_MultipleFrames.html
@@ -0,0 +1,58 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that when we remove one of a process's frames from the DOM, the process's
+priority is recomputed.
+-->
+<head>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.src = 'file_MultipleFrames.html';
+
+  var childID = null;
+  var iframe2;
+  Promise.all([
+    expectProcessCreated('FOREGROUND').then(function(chid) {
+      childID = chid;
+    }),
+    new Promise(function(resolve, reject) {
+      iframe.addEventListener('mozbrowseropenwindow', function(e) {
+        iframe2 = e.detail.frameElement;
+        var p = expectMozbrowserEvent(iframe2, 'loadend');
+        document.body.appendChild(iframe2);
+        resolve(p);
+      });
+    })
+  ]).then(function() {
+    // At this point, the child process has been set to FOREGROUND, and the popup
+    // opened by file_MultipleFrames has finished loading.
+    //
+    // Now setVisible(false) the popup frame and remove the popup frame from the
+    // DOM.  This should cause the process to take on BACKGROUND priority.
+    var p = expectPriorityChange(childID, 'BACKGROUND');
+    iframe.setVisible(false);
+    document.body.removeChild(iframe2);
+    return p;
+  }).then(SimpleTest.finish);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_NestedFrames.html b/dom/browser-element/mochitest/priority/test_NestedFrames.html
new file mode 100644
index 0000000000..e5381bcc55
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_NestedFrames.html
@@ -0,0 +1,62 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test changing the visibility of an <iframe mozbrowser> changes the visibility
+(and thus the priority) of any <iframe mozbrowser>s it contains.
+-->
+<head>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  // Set up the following hierarchy of frames:
+  //
+  //   <iframe mozbrowser remote=false src='file_NestedFramesOuter.html'>
+  //     <iframe mozbrowser remote=true src='file_empty.html'>
+  //
+  // When we change the visibility of the outer iframe, it should change the
+  // priority of the inner one.
+
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.setAttribute('remote', false);
+  iframe.src = 'file_NestedFramesOuter.html#' + browserElementTestHelpers.emptyPage1;
+
+  // Note that this is the process corresponding to the /inner/ iframe.  The
+  // outer iframe runs in-process (because it has remote=false).
+  var childID = null;
+  Promise.all(
+    [expectOnlyOneProcessCreated('FOREGROUND').then(function(child) {
+       childID = child;
+     }),
+     expectMozbrowserEvent(iframe, 'loadend')]
+  ).then(function() {
+    // Send the outer iframe into the background.  This should change the
+    // priority of the inner frame's process to BACKGROUND.
+    var p = expectPriorityChange(childID, 'BACKGROUND');
+    iframe.setVisible(false);
+    return p;
+  }).then(function() {
+    var p = expectPriorityChange(childID, 'FOREGROUND');
+    iframe.setVisible(true);
+    return p;
+  }).then(SimpleTest.finish);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_Preallocated.html b/dom/browser-element/mochitest/priority/test_Preallocated.html
new file mode 100644
index 0000000000..b2cb0335ee
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_Preallocated.html
@@ -0,0 +1,71 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that the preallocated process starts up with priority BACKGROUND.
+-->
+<head>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+browserElementTestHelpers.enableProcessPriorityManager();
+
+var preallocationEnabledPref = null;
+try {
+  preallocationEnabledPref = SpecialPowers.getBoolPref('dom.ipc.processPrelaunch.enabled');
+}
+catch(e) {
+  preallocationEnabledPref = null;
+}
+
+var childID = null;
+
+var cleanedUp = false;
+function cleanUp()
+{
+  if (cleanedUp) {
+    return;
+  }
+
+  cleanedUp = true;
+}
+
+// Even if this test times out, we still want to run cleanUp so as to set the
+// pref back.
+addEventListener('unload', cleanUp);
+
+function runTest()
+{
+  if (preallocationEnabledPref) {
+    ok(false, "dom.ipc.processPrelaunch.enabled must be " +
+              "false for this test to work.");
+    SimpleTest.finish();
+    return;
+  }
+
+  // Ensure that the preallocated process initially gets BACKGROUND priority.
+  // That's it.
+  expectProcessCreated('PREALLOC').then(function() {
+    // We need to set the pref asynchoronously or the preallocated process won't
+    // be shut down.
+    SimpleTest.executeSoon(function(){
+      cleanUp();
+      SimpleTest.finish();
+    });
+  });
+}
+// Setting this pref to true should cause us to prelaunch a process.
+addEventListener('testready', function() {
+  SpecialPowers.pushPrefEnv({'set':[["dom.ipc.processPrelaunch.enabled",true]]},runTest);
+});
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_Simple.html b/dom/browser-element/mochitest/priority/test_Simple.html
new file mode 100644
index 0000000000..7cc801e549
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_Simple.html
@@ -0,0 +1,59 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+A simple test of the process priority manager.
+
+https://bugzilla.mozilla.org/show_bug.cgi?id=844323
+
+Note: If you run this test alone (i.e. not as part of the larger mochitest
+suite), you may see some IPC assertions, e.g. "Can't allocate graphics
+resources."
+
+What appears to be happening is that we close the Firefox window before the
+frame we create in this tab finishes starting up.  Then the frame finishes
+loading, and it tries to show itself.  But it's too late to show a remote frame
+at that point, so we kill the child process.
+
+In other words, I think these errors are nothing to worry about.
+-->
+<head>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+browserElementTestHelpers.enableProcessPriorityManager();
+
+var allCompleted = 0;
+var allExpected  = 2;
+function finish() {
+  allCompleted++;
+  if (allCompleted === allExpected) {
+    SimpleTest.finish();
+  }
+}
+
+function runTest() {
+  var iframeLoaded = false;
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.src = browserElementTestHelpers.emptyPage1;
+
+  iframe.addEventListener('mozbrowserloadend', finish);
+  expectProcessCreated('FOREGROUND').then(finish);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_Visibility.html b/dom/browser-element/mochitest/priority/test_Visibility.html
new file mode 100644
index 0000000000..58648b99f1
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_Visibility.html
@@ -0,0 +1,51 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that setVisible() changes a process's priority.
+-->
+<head>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.src = browserElementTestHelpers.emptyPage1;
+
+  var childID = null;
+  Promise.all([
+    expectOnlyOneProcessCreated('FOREGROUND').then(function(chid) {
+      childID = chid;
+    }),
+    expectMozbrowserEvent(iframe, 'loadend')
+  ]).then(function() {
+    // Mark the frame as not visible.  This should cause its priority to drop
+    // to BACKGROUND.
+    var p = expectPriorityChange(childID, 'BACKGROUND');
+    iframe.setVisible(false);
+    return p;
+  }).then(function() {
+    // Mark the frame as visible again.  This should cause its priority change
+    // back to FOREGROUND.
+    var p = expectPriorityChange(childID, 'FOREGROUND');
+    iframe.setVisible(true);
+    return p;
+  }).then(SimpleTest.finish);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/priority/test_WebGLContextLost.html b/dom/browser-element/mochitest/priority/test_WebGLContextLost.html
new file mode 100644
index 0000000000..383506ec6e
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_WebGLContextLost.html
@@ -0,0 +1,99 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that calling setVisible('false') and then sending a low-memory
+notification causes a WebGL context loss event.
+-->
+<head>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.addPermission();
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.src = 'file_WebGLContextLost.html';
+
+  // We use this to ensure that we don't call SimpleTest.finish() twice.
+  var finished = false;
+  function finishOnce() {
+    if (!finished) {
+      SimpleTest.finish();
+      finished = true;
+    }
+  }
+
+  expectMozbrowserEvent(iframe, 'error').then(function(e) {
+    if (finished) {
+      // We don't care if the frame dies after the test finishes.
+      return;
+    }
+    todo(false, "child process is crashing; this probably indicates that " +
+         "something is wrong with WebGL in child processes on your machine.");
+    is(e.detail.type, 'fatal');
+  }).then(finishOnce);
+
+  var childID = null;
+  Promise.all([
+    expectOnlyOneProcessCreated('FOREGROUND').then(function(chid) {
+      childID = chid;
+    }),
+    expectMozbrowserEvent(iframe, 'loadend'),
+    expectMozbrowserEvent(iframe, 'showmodalprompt').then(function(e) {
+      is(e.detail.message, 'ready');
+    })
+  ]).then(function() {
+    // Fire a low-memory notification once the process goes into the background
+    // due to the setVisible(false) call below.
+    expectPriorityChange(childID, 'BACKGROUND').then(function() {
+      SimpleTest.executeSoon(function() {
+        var os = SpecialPowers.Cc["@mozilla.org/observer-service;1"]
+                              .getService(SpecialPowers.Ci.nsIObserverService);
+        os.notifyObservers(null, "memory-pressure", "low-memory");
+        ok(true, 'Successfully notified observers.');
+      });
+    });
+
+    // This test isn't the only possible source of a low-memory notification; the
+    // browser can fire one whenever it likes.  So it's fine if we lose the
+    // WebGL context before we fire the low-memory notification ourself.
+
+    var p = expectMozbrowserEvent(iframe, 'showmodalprompt').then(function(e) {
+      is(e.detail.message, 'webglcontextlost');
+    });
+
+    iframe.setVisible(false);
+    return p;
+  }).then(finishOnce);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', function() {
+  // At the time this test was written, webgl was blocklisted inside child
+  // processes on desktop Linux.  The issue is that we spawn a child process to
+  // read driver info, but we only did this on the main prrocess.  Child
+  // processes never read the driver info themselves, nor do they get it from
+  // their parent, so they refuse to start up WebGL.
+  //
+  // This isn't a problem on B2G because we force WebGL on there.  But it
+  // obviously makes this test difficult.  bjacob says forcing WebGL on here
+  // shouldn't hurt things, and anyway this setting mirrors what we do on B2G,
+  // which is what we're trying to test!
+  SpecialPowers.pushPrefEnv({set: [["webgl.force-enabled", true]]},
+                            runTest);
+});
+
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_NoAttr.html b/dom/browser-element/mochitest/test_browserElement_NoAttr.html
new file mode 100644
index 0000000000..070aee19f9
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_NoAttr.html
@@ -0,0 +1,46 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=710231
+-->
+<head>
+  <title>Test for Bug 710231</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=710231">Mozilla Bug 710231</a>
+
+<!--
+  Test that an iframe without the |mozbrowser| attribute does not emit
+  mozbrowserX events.
+-->
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+
+function runTest() {
+  var iframe = document.getElementById('iframe');
+  iframe.addEventListener('mozbrowserloadstart', function() {
+    ok(false, 'Should not send mozbrowserloadstart event.');
+  });
+
+  iframe.addEventListener('load', function() {
+    ok(true, 'Got iframe load event.');
+    SimpleTest.finish();
+  });
+
+  iframe.src = browserElementTestHelpers.emptyPage1;
+}
+
+addEventListener('load', function() { SimpleTest.executeSoon(runTest); });
+
+</script>
+
+<iframe id='iframe'></iframe>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_NoPermission.html b/dom/browser-element/mochitest/test_browserElement_NoPermission.html
new file mode 100644
index 0000000000..4e1d880726
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_NoPermission.html
@@ -0,0 +1,49 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=710231
+-->
+<head>
+  <title>Test for Bug 710231</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=710231">Mozilla Bug 710231</a>
+
+<!--
+  Test that an iframe with the |mozbrowser| attribute does not emit
+  mozbrowserX events when this page does not have the "browser" permission.
+-->
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  iframe.addEventListener('mozbrowserloadstart', function() {
+    ok(false, 'Should not send mozbrowserloadstart event.');
+  });
+
+  iframe.addEventListener('load', function() {
+    ok(true, 'Got iframe load event.');
+    SimpleTest.finish();
+  });
+
+  iframe.src = browserElementTestHelpers.emptyPage1;
+}
+
+browserElementTestHelpers.setEnabledPref(true);
+SpecialPowers.removePermission("browser", document);
+addEventListener('testready', runTest);
+
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_NoPref.html b/dom/browser-element/mochitest/test_browserElement_NoPref.html
new file mode 100644
index 0000000000..df69e4c437
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_NoPref.html
@@ -0,0 +1,49 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=710231
+-->
+<head>
+  <title>Test for Bug 710231</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=710231">Mozilla Bug 710231</a>
+
+<!--
+  Test that an iframe with the |mozbrowser| attribute does not emit
+  mozbrowserX events when they're globally pref'ed off.
+-->
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+
+function runTest() {
+
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe);
+
+  iframe.addEventListener('mozbrowserloadstart', function() {
+    ok(false, 'Should not send mozbrowserloadstart event.');
+  });
+
+  iframe.addEventListener('load', function() {
+    ok(true, 'Got iframe load event.');
+    SimpleTest.finish();
+  });
+
+  iframe.src = browserElementTestHelpers.emptyPage1;
+}
+
+browserElementTestHelpers.setEnabledPref(false);
+addEventListener('testready', runTest);
+
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_ActiveStateChange.html b/dom/browser-element/mochitest/test_browserElement_inproc_ActiveStateChange.html
new file mode 100644
index 0000000000..4a14ad7cb3
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_ActiveStateChange.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test ActiveStateChangeOnChangingMutedOrVolume</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ActiveStateChange.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Alert.html b/dom/browser-element/mochitest/test_browserElement_inproc_Alert.html
new file mode 100644
index 0000000000..03d03135de
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Alert.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=741587
+-->
+<head>
+  <title>Test for Bug 741587</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=741587">Mozilla Bug 741587</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Alert.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_AlertInFrame.html b/dom/browser-element/mochitest/test_browserElement_inproc_AlertInFrame.html
new file mode 100644
index 0000000000..d797a1a3a7
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_AlertInFrame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for iframe mozbrowser</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AlertInFrame.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannel.html b/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannel.html
new file mode 100644
index 0000000000..6bba008d72
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannel.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element audioChannel.</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AudioChannel.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannelMutedByDefault.html b/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannelMutedByDefault.html
new file mode 100644
index 0000000000..304b1b8b45
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannelMutedByDefault.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Bug 1235535 - Audio Channel Muted-By-Default.</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AudioChannelMutedByDefault.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannelSeeking.html b/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannelSeeking.html
new file mode 100644
index 0000000000..a7834e9291
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannelSeeking.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Bug 1225425 - Do not unregister the AudioChannelAgent during seeking</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AudioChannelSeeking.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannel_nested.html b/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannel_nested.html
new file mode 100644
index 0000000000..2ee58002cd
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_AudioChannel_nested.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element audioChannel in nested mozbrowser iframes.</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AudioChannel_nested.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_AudioPlayback.html b/dom/browser-element/mochitest/test_browserElement_inproc_AudioPlayback.html
new file mode 100644
index 0000000000..364eeff68e
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_AudioPlayback.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1180824
+-->
+<head>
+  <title>Test for Bug 1180824</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1180824">Mozilla Bug 1180824</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_AudioPlayback.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Auth.html b/dom/browser-element/mochitest/test_browserElement_inproc_Auth.html
new file mode 100644
index 0000000000..0dd60f8c64
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Auth.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=741587
+-->
+<head>
+  <title>Test for Bug 775464</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=775464">Mozilla Bug 775464</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Auth.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_BackForward.html b/dom/browser-element/mochitest/test_browserElement_inproc_BackForward.html
new file mode 100644
index 0000000000..d841cc3e0a
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_BackForward.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_BackForward.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_BadScreenshot.html b/dom/browser-element/mochitest/test_browserElement_inproc_BadScreenshot.html
new file mode 100644
index 0000000000..8e4b61b333
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_BadScreenshot.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 800170</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_BadScreenshot.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_BrowserWindowNamespace.html b/dom/browser-element/mochitest/test_browserElement_inproc_BrowserWindowNamespace.html
new file mode 100644
index 0000000000..3fafbe6466
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_BrowserWindowNamespace.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 780351</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_BrowserWindowNamespace.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_BrowserWindowResize.html b/dom/browser-element/mochitest/test_browserElement_inproc_BrowserWindowResize.html
new file mode 100644
index 0000000000..bcc86b8720
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_BrowserWindowResize.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 891763</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_BrowserWindowResize.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Close.html b/dom/browser-element/mochitest/test_browserElement_inproc_Close.html
new file mode 100644
index 0000000000..76d203f9d9
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Close.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=757182
+-->
+<head>
+  <title>Test for Bug 757182</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=757182">Mozilla Bug 757182</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Close.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_CloseFromOpener.html b/dom/browser-element/mochitest/test_browserElement_inproc_CloseFromOpener.html
new file mode 100644
index 0000000000..3c7ee4d874
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_CloseFromOpener.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=757182
+-->
+<head>
+  <title>Test for Bug 757182</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=757182">Mozilla Bug 757182</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_CloseFromOpener.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_ContextmenuEvents.html b/dom/browser-element/mochitest/test_browserElement_inproc_ContextmenuEvents.html
new file mode 100644
index 0000000000..a43f7dbef4
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_ContextmenuEvents.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Contextmenu Events</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ContextmenuEvents.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_CookiesNotThirdParty.html b/dom/browser-element/mochitest/test_browserElement_inproc_CookiesNotThirdParty.html
new file mode 100644
index 0000000000..37ea16fb04
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_CookiesNotThirdParty.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 806127</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_CookiesNotThirdParty.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_CopyPaste.html b/dom/browser-element/mochitest/test_browserElement_inproc_CopyPaste.html
new file mode 100644
index 0000000000..892245d4f2
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_CopyPaste.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=987040
+-->
+<head>
+  <title>Test for Bug 987040</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=987040">Mozilla Bug 987040</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_CopyPaste.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_DOMRequestError.html b/dom/browser-element/mochitest/test_browserElement_inproc_DOMRequestError.html
new file mode 100644
index 0000000000..6a9e5bbbab
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_DOMRequestError.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=787519
+-->
+<head>
+  <title>Test for Bug 787519</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=787519">Mozilla Bug 787519</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_DOMRequestError.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_DataURI.html b/dom/browser-element/mochitest/test_browserElement_inproc_DataURI.html
new file mode 100644
index 0000000000..2ceb49cd0e
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_DataURI.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=720157
+-->
+<head>
+  <title>Test for Bug 720157</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=720157">Mozilla Bug 720157</a>
+
+<script type='application/javascript;version=1.7' src='browserElement_DataURI.js'></script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_DocumentFirstPaint.html b/dom/browser-element/mochitest/test_browserElement_inproc_DocumentFirstPaint.html
new file mode 100644
index 0000000000..3197adf667
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_DocumentFirstPaint.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 829486</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_DocumentFirstPaint.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Download.html b/dom/browser-element/mochitest/test_browserElement_inproc_Download.html
new file mode 100644
index 0000000000..c2e5e2ed34
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Download.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 983747</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_Download.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_ErrorSecurity.html b/dom/browser-element/mochitest/test_browserElement_inproc_ErrorSecurity.html
new file mode 100644
index 0000000000..318d29831b
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_ErrorSecurity.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for mozbrowser</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ErrorSecurity.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_ExecuteScript.html b/dom/browser-element/mochitest/test_browserElement_inproc_ExecuteScript.html
new file mode 100644
index 0000000000..f63f31d427
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_ExecuteScript.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1174733
+-->
+<head>
+  <title>Test for Bug 1163961</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1174733">Mozilla Bug 1174733</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_ExecuteScript.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_ExposableURI.html b/dom/browser-element/mochitest/test_browserElement_inproc_ExposableURI.html
new file mode 100644
index 0000000000..089e5db442
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_ExposableURI.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=795317
+-->
+<head>
+  <title>Test for Bug 795317</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=795317">Mozilla Bug 795317</a>
+
+<script type="application/javascript;version1.7" src="browserElement_ExposableURI.js"></script>
+
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Find.html b/dom/browser-element/mochitest/test_browserElement_inproc_Find.html
new file mode 100644
index 0000000000..386bc78820
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Find.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1163961
+-->
+<head>
+  <title>Test for Bug 1163961</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1163961">Mozilla Bug 1163961</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Find.js">
+</script>
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_FirstPaint.html b/dom/browser-element/mochitest/test_browserElement_inproc_FirstPaint.html
new file mode 100644
index 0000000000..ee013860c9
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_FirstPaint.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 787378</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_FirstPaint.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_ForwardName.html b/dom/browser-element/mochitest/test_browserElement_inproc_ForwardName.html
new file mode 100644
index 0000000000..f24691ff1b
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_ForwardName.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 781320</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ForwardName.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_FrameWrongURI.html b/dom/browser-element/mochitest/test_browserElement_inproc_FrameWrongURI.html
new file mode 100644
index 0000000000..f0e6e6c20c
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_FrameWrongURI.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_FrameWrongURI.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_GetContentDimensions.html b/dom/browser-element/mochitest/test_browserElement_inproc_GetContentDimensions.html
new file mode 100644
index 0000000000..73b59800d7
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_GetContentDimensions.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_GetContentDimensions.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_GetScreenshot.html b/dom/browser-element/mochitest/test_browserElement_inproc_GetScreenshot.html
new file mode 100644
index 0000000000..cb246fc06d
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_GetScreenshot.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=753595
+-->
+<head>
+  <title>Test for Bug 753595</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=753595">Mozilla Bug 753595</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_GetScreenshot.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_GetScreenshotDppx.html b/dom/browser-element/mochitest/test_browserElement_inproc_GetScreenshotDppx.html
new file mode 100644
index 0000000000..dfc10d1024
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_GetScreenshotDppx.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=959066
+-->
+<head>
+  <title>Test for Bug 959066</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=959066">Mozilla Bug 959066</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_GetScreenshotDppx.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Iconchange.html b/dom/browser-element/mochitest/test_browserElement_inproc_Iconchange.html
new file mode 100644
index 0000000000..2f17287de4
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Iconchange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=719461
+-->
+<head>
+  <title>Test for Bug 719461</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=719461">Mozilla Bug 719461</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Iconchange.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_LoadEvents.html b/dom/browser-element/mochitest/test_browserElement_inproc_LoadEvents.html
new file mode 100644
index 0000000000..3370ff8741
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_LoadEvents.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=710231
+-->
+<head>
+  <title>Test for Bug 710231</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=710231">Mozilla Bug 710231</a>
+
+<script type="application/javascript;version1.7" src="browserElement_LoadEvents.js"></script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Manifestchange.html b/dom/browser-element/mochitest/test_browserElement_inproc_Manifestchange.html
new file mode 100644
index 0000000000..64200bd48d
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Manifestchange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=982800
+-->
+<head>
+  <title>Test for Bug 982800</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=982800">Mozilla Bug 982800</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Manifestchange.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Metachange.html b/dom/browser-element/mochitest/test_browserElement_inproc_Metachange.html
new file mode 100644
index 0000000000..d799a52e46
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Metachange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=962626
+-->
+<head>
+  <title>Test for Bug 962626</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=962626">Mozilla Bug 962626</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Metachange.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_NextPaint.html b/dom/browser-element/mochitest/test_browserElement_inproc_NextPaint.html
new file mode 100644
index 0000000000..d9250a8db5
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_NextPaint.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 808231</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_NextPaint.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_NoAudioTrack.html b/dom/browser-element/mochitest/test_browserElement_inproc_NoAudioTrack.html
new file mode 100644
index 0000000000..77e33befa2
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_NoAudioTrack.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Bug 1227051 - No audio track video shouldn't register the AudioChannelAgent</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_NoAudioTrack.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenMixedProcess.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenMixedProcess.html
new file mode 100644
index 0000000000..1248c17727
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_OpenMixedProcess.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 776129</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenMixedProcess.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenNamed.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenNamed.html
new file mode 100644
index 0000000000..bbe12545c7
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_OpenNamed.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenNamed.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenTab.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenTab.html
new file mode 100644
index 0000000000..85b979bd0a
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_OpenTab.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1144015
+-->
+<head>
+  <title>Test for Bug 1144015</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1144015">Mozilla Bug 1144015</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_OpenTab.js">
+</script>
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindow.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindow.html
new file mode 100644
index 0000000000..7c249792f8
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindow.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindow.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowDifferentOrigin.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowDifferentOrigin.html
new file mode 100644
index 0000000000..327ff8960f
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowDifferentOrigin.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowDifferentOrigin.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowEmpty.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowEmpty.html
new file mode 100644
index 0000000000..03738de71c
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowEmpty.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 1216937</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowEmpty.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowInFrame.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowInFrame.html
new file mode 100644
index 0000000000..e2c02d4a9d
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowInFrame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowInFrame.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowRejected.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowRejected.html
new file mode 100644
index 0000000000..a96b378f6f
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowRejected.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowRejected.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowRejected2.html b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowRejected2.html
new file mode 100644
index 0000000000..a96b378f6f
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_OpenWindowRejected2.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowRejected.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Opensearch.html b/dom/browser-element/mochitest/test_browserElement_inproc_Opensearch.html
new file mode 100644
index 0000000000..23f21ed832
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Opensearch.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=883002
+-->
+<head>
+  <title>Test for Bug 883002</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=883002">Mozilla Bug 883002</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Opensearch.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_PrivateBrowsing.html b/dom/browser-element/mochitest/test_browserElement_inproc_PrivateBrowsing.html
new file mode 100644
index 0000000000..0947fd7c71
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_PrivateBrowsing.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=832700
+-->
+<head>
+  <title>Test for Bug 832700</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=832700">Mozilla Bug 832700</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_PrivateBrowsing.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_PromptCheck.html b/dom/browser-element/mochitest/test_browserElement_inproc_PromptCheck.html
new file mode 100644
index 0000000000..476c7e2c28
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_PromptCheck.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=741587
+-->
+<head>
+  <title>Test for Bug 741587</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=741587">Mozilla Bug 741587</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_PromptCheck.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_PromptConfirm.html b/dom/browser-element/mochitest/test_browserElement_inproc_PromptConfirm.html
new file mode 100644
index 0000000000..b29a520259
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_PromptConfirm.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=741587
+-->
+<head>
+  <title>Test for Bug 741587</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=741587">Mozilla Bug 741587</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_PromptConfirm.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Proxy.html b/dom/browser-element/mochitest/test_browserElement_inproc_Proxy.html
new file mode 100644
index 0000000000..05a416eeea
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Proxy.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1196654
+-->
+<head>
+  <title>Test for Bug 1196654</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1196654">Mozilla Bug 1196654</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Proxy.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_PurgeHistory.html b/dom/browser-element/mochitest/test_browserElement_inproc_PurgeHistory.html
new file mode 100644
index 0000000000..1c052996cf
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_PurgeHistory.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_PurgeHistory.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Reload.html b/dom/browser-element/mochitest/test_browserElement_inproc_Reload.html
new file mode 100644
index 0000000000..75b912b19a
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Reload.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_Reload.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_ReloadPostRequest.html b/dom/browser-element/mochitest/test_browserElement_inproc_ReloadPostRequest.html
new file mode 100644
index 0000000000..d26e7a0b5c
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_ReloadPostRequest.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ReloadPostRequest.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_RemoveBrowserElement.html b/dom/browser-element/mochitest/test_browserElement_inproc_RemoveBrowserElement.html
new file mode 100644
index 0000000000..8ccbe09a76
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_RemoveBrowserElement.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=787517
+-->
+<head>
+  <title>Test for Bug 787517</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=787517">Mozilla Bug 787517</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_RemoveBrowserElement.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_ScrollEvent.html b/dom/browser-element/mochitest/test_browserElement_inproc_ScrollEvent.html
new file mode 100644
index 0000000000..e877922433
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_ScrollEvent.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=770847
+-->
+<head>
+  <title>Test for Bug 770847</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=770847">Mozilla Bug 770847</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_ScrollEvent.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_SecurityChange.html b/dom/browser-element/mochitest/test_browserElement_inproc_SecurityChange.html
new file mode 100644
index 0000000000..ceaa6a40ea
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_SecurityChange.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_SecurityChange.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_SendEvent.html b/dom/browser-element/mochitest/test_browserElement_inproc_SendEvent.html
new file mode 100644
index 0000000000..5eee91ed75
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_SendEvent.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=774809
+-->
+<head>
+  <title>Test for Bug 774809</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=774809">Mozilla Bug 774809</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_SendEvent.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_SetInputMethodActive.html b/dom/browser-element/mochitest/test_browserElement_inproc_SetInputMethodActive.html
new file mode 100644
index 0000000000..957bf82fc4
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_SetInputMethodActive.html
@@ -0,0 +1,14 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 905573</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_SetInputMethodActive.js">
+</script>
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_SetVisible.html b/dom/browser-element/mochitest/test_browserElement_inproc_SetVisible.html
new file mode 100644
index 0000000000..6241d4b1f3
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_SetVisible.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=702880
+-->
+ <head>
+  <title>Test for Bug 702880</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=753595">Mozilla Bug 702880</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_SetVisible.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_SetVisibleFrames.html b/dom/browser-element/mochitest/test_browserElement_inproc_SetVisibleFrames.html
new file mode 100644
index 0000000000..8ae1822852
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_SetVisibleFrames.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 762939</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_SetVisibleFrames.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_SetVisibleFrames2.html b/dom/browser-element/mochitest/test_browserElement_inproc_SetVisibleFrames2.html
new file mode 100644
index 0000000000..17d161a959
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_SetVisibleFrames2.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 762939</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_SetVisibleFrames2.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Stop.html b/dom/browser-element/mochitest/test_browserElement_inproc_Stop.html
new file mode 100644
index 0000000000..42c32da7e8
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Stop.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_Stop.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_TargetBlank.html b/dom/browser-element/mochitest/test_browserElement_inproc_TargetBlank.html
new file mode 100644
index 0000000000..916ed312b7
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_TargetBlank.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for mozbrowser</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_TargetBlank.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_TargetTop.html b/dom/browser-element/mochitest/test_browserElement_inproc_TargetTop.html
new file mode 100644
index 0000000000..6c99f1c21e
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_TargetTop.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 771273</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_TargetTop.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_ThemeColor.html b/dom/browser-element/mochitest/test_browserElement_inproc_ThemeColor.html
new file mode 100644
index 0000000000..4075ce58dc
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_ThemeColor.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1013913
+-->
+<head>
+  <title>Test for Bug 1013913</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1013913">Mozilla Bug 1013913</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_ThemeColor.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Titlechange.html b/dom/browser-element/mochitest/test_browserElement_inproc_Titlechange.html
new file mode 100644
index 0000000000..1fdde48c11
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Titlechange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=720157
+-->
+<head>
+  <title>Test for Bug 720157</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=720157">Mozilla Bug 720157</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_Titlechange.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_TopBarrier.html b/dom/browser-element/mochitest/test_browserElement_inproc_TopBarrier.html
new file mode 100644
index 0000000000..c77a7a9ec2
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_TopBarrier.html
@@ -0,0 +1,21 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=725796
+-->
+<head>
+  <title>Test for Bug 725796</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=725796">Mozilla Bug 725796</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_TopBarrier.js">
+</script>
+
+</body>
+</html>
+
+
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_Viewmode.html b/dom/browser-element/mochitest/test_browserElement_inproc_Viewmode.html
new file mode 100644
index 0000000000..286dd39898
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_Viewmode.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1162844
+-->
+<head>
+  <title>Test for Bug 1162844</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1162844">Mozilla Bug 1162844</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Viewmode.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_VisibilityChange.html b/dom/browser-element/mochitest/test_browserElement_inproc_VisibilityChange.html
new file mode 100644
index 0000000000..ce4251a427
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_VisibilityChange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=868816
+-->
+<head>
+  <title>Test for Bug 868816</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=868816">Mozilla Bug 868816</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_VisibilityChange.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptions.html b/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptions.html
new file mode 100644
index 0000000000..36479ee06d
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptions.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 770239</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_XFrameOptions.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptionsAllowFrom.html b/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptionsAllowFrom.html
new file mode 100644
index 0000000000..801c7879f1
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptionsAllowFrom.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 690168</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_XFrameOptionsAllowFrom.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptionsDeny.html b/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptionsDeny.html
new file mode 100644
index 0000000000..edd91dbd77
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptionsDeny.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 770239</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_XFrameOptionsDeny.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptionsSameOrigin.html b/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptionsSameOrigin.html
new file mode 100644
index 0000000000..e0ecbabc4e
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_XFrameOptionsSameOrigin.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 770239</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_XFrameOptionsSameOrigin.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_inproc_getWebManifest.html b/dom/browser-element/mochitest/test_browserElement_inproc_getWebManifest.html
new file mode 100644
index 0000000000..1252de5e5b
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_inproc_getWebManifest.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 1169633</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.8"
+  src="async.js">
+</script>
+<script type="application/javascript;version=1.8"
+  src="browserElement_getWebManifest.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_ActiveStateChange.html b/dom/browser-element/mochitest/test_browserElement_oop_ActiveStateChange.html
new file mode 100644
index 0000000000..4a14ad7cb3
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_ActiveStateChange.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test ActiveStateChangeOnChangingMutedOrVolume</title>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ActiveStateChange.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Alert.html b/dom/browser-element/mochitest/test_browserElement_oop_Alert.html
new file mode 100644
index 0000000000..03d03135de
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Alert.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=741587
+-->
+<head>
+  <title>Test for Bug 741587</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=741587">Mozilla Bug 741587</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Alert.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_AlertInFrame.html b/dom/browser-element/mochitest/test_browserElement_oop_AlertInFrame.html
new file mode 100644
index 0000000000..d797a1a3a7
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_AlertInFrame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for iframe mozbrowser</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AlertInFrame.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_AudioChannel.html b/dom/browser-element/mochitest/test_browserElement_oop_AudioChannel.html
new file mode 100644
index 0000000000..34909e904a
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_AudioChannel.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element audioChannel.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AudioChannel.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_AudioChannelMutedByDefault.html b/dom/browser-element/mochitest/test_browserElement_oop_AudioChannelMutedByDefault.html
new file mode 100644
index 0000000000..60bead59f4
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_AudioChannelMutedByDefault.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Bug 1235535 - Audio Channel Muted-By-Default.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AudioChannelMutedByDefault.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_AudioChannelSeeking.html b/dom/browser-element/mochitest/test_browserElement_oop_AudioChannelSeeking.html
new file mode 100644
index 0000000000..54c3a1fb4b
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_AudioChannelSeeking.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Bug 1225425 - Do not unregister the AudioChannelAgent during seeking</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AudioChannelSeeking.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_AudioChannel_nested.html b/dom/browser-element/mochitest/test_browserElement_oop_AudioChannel_nested.html
new file mode 100644
index 0000000000..d189a7ca4b
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_AudioChannel_nested.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element audioChannel.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_AudioChannel_nested.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_AudioPlayback.html b/dom/browser-element/mochitest/test_browserElement_oop_AudioPlayback.html
new file mode 100644
index 0000000000..bb3a1c2d66
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_AudioPlayback.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1180824
+-->
+<head>
+  <title>Test for Bug 1180824</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1180824">Mozilla Bug 1180824</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_AudioPlayback.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Auth.html b/dom/browser-element/mochitest/test_browserElement_oop_Auth.html
new file mode 100644
index 0000000000..0dd60f8c64
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Auth.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=741587
+-->
+<head>
+  <title>Test for Bug 775464</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=775464">Mozilla Bug 775464</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Auth.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_BackForward.html b/dom/browser-element/mochitest/test_browserElement_oop_BackForward.html
new file mode 100644
index 0000000000..e5d753b5e3
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_BackForward.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_BackForward.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_BadScreenshot.html b/dom/browser-element/mochitest/test_browserElement_oop_BadScreenshot.html
new file mode 100644
index 0000000000..5713b512e8
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_BadScreenshot.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 800170</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_BadScreenshot.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_BrowserWindowResize.html b/dom/browser-element/mochitest/test_browserElement_oop_BrowserWindowResize.html
new file mode 100644
index 0000000000..bcc86b8720
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_BrowserWindowResize.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 891763</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_BrowserWindowResize.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Close.html b/dom/browser-element/mochitest/test_browserElement_oop_Close.html
new file mode 100644
index 0000000000..76d203f9d9
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Close.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=757182
+-->
+<head>
+  <title>Test for Bug 757182</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=757182">Mozilla Bug 757182</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Close.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_CloseFromOpener.html b/dom/browser-element/mochitest/test_browserElement_oop_CloseFromOpener.html
new file mode 100644
index 0000000000..3c7ee4d874
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_CloseFromOpener.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=757182
+-->
+<head>
+  <title>Test for Bug 757182</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=757182">Mozilla Bug 757182</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_CloseFromOpener.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_ContextmenuEvents.html b/dom/browser-element/mochitest/test_browserElement_oop_ContextmenuEvents.html
new file mode 100644
index 0000000000..a43f7dbef4
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_ContextmenuEvents.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Contextmenu Events</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ContextmenuEvents.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_CookiesNotThirdParty.html b/dom/browser-element/mochitest/test_browserElement_oop_CookiesNotThirdParty.html
new file mode 100644
index 0000000000..37ea16fb04
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_CookiesNotThirdParty.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 806127</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_CookiesNotThirdParty.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_CopyPaste.html b/dom/browser-element/mochitest/test_browserElement_oop_CopyPaste.html
new file mode 100644
index 0000000000..892245d4f2
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_CopyPaste.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=987040
+-->
+<head>
+  <title>Test for Bug 987040</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=987040">Mozilla Bug 987040</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_CopyPaste.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_DOMRequestError.html b/dom/browser-element/mochitest/test_browserElement_oop_DOMRequestError.html
new file mode 100644
index 0000000000..48d404cc30
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_DOMRequestError.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=787519
+-->
+<head>
+  <title>Test for Bug 787519</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=787519">Mozilla Bug 787519</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_DOMRequestError.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_DataURI.html b/dom/browser-element/mochitest/test_browserElement_oop_DataURI.html
new file mode 100644
index 0000000000..2ceb49cd0e
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_DataURI.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=720157
+-->
+<head>
+  <title>Test for Bug 720157</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=720157">Mozilla Bug 720157</a>
+
+<script type='application/javascript;version=1.7' src='browserElement_DataURI.js'></script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_DocumentFirstPaint.html b/dom/browser-element/mochitest/test_browserElement_oop_DocumentFirstPaint.html
new file mode 100644
index 0000000000..6667a76eb4
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_DocumentFirstPaint.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 829486</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_DocumentFirstPaint.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Download.html b/dom/browser-element/mochitest/test_browserElement_oop_Download.html
new file mode 100644
index 0000000000..c2e5e2ed34
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Download.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 983747</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_Download.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_ErrorSecurity.html b/dom/browser-element/mochitest/test_browserElement_oop_ErrorSecurity.html
new file mode 100644
index 0000000000..318d29831b
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_ErrorSecurity.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for mozbrowser</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ErrorSecurity.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_ExecuteScript.html b/dom/browser-element/mochitest/test_browserElement_oop_ExecuteScript.html
new file mode 100644
index 0000000000..e3bbabfa0c
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_ExecuteScript.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1174733
+-->
+<head>
+  <title>Test for Bug 1163961</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1174733">Mozilla Bug 1174733</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_ExecuteScript.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_ExposableURI.html b/dom/browser-element/mochitest/test_browserElement_oop_ExposableURI.html
new file mode 100644
index 0000000000..089e5db442
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_ExposableURI.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=795317
+-->
+<head>
+  <title>Test for Bug 795317</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=795317">Mozilla Bug 795317</a>
+
+<script type="application/javascript;version1.7" src="browserElement_ExposableURI.js"></script>
+
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Find.html b/dom/browser-element/mochitest/test_browserElement_oop_Find.html
new file mode 100644
index 0000000000..e0333a6bb5
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Find.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1163961
+-->
+<head>
+  <title>Test for Bug 1163961</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1163961">Mozilla Bug 1163961</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Find.js">
+</script>
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_FirstPaint.html b/dom/browser-element/mochitest/test_browserElement_oop_FirstPaint.html
new file mode 100644
index 0000000000..ee013860c9
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_FirstPaint.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 787378</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_FirstPaint.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_ForwardName.html b/dom/browser-element/mochitest/test_browserElement_oop_ForwardName.html
new file mode 100644
index 0000000000..f24691ff1b
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_ForwardName.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 781320</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ForwardName.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_FrameWrongURI.html b/dom/browser-element/mochitest/test_browserElement_oop_FrameWrongURI.html
new file mode 100644
index 0000000000..f0e6e6c20c
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_FrameWrongURI.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_FrameWrongURI.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_GetContentDimensions.html b/dom/browser-element/mochitest/test_browserElement_oop_GetContentDimensions.html
new file mode 100644
index 0000000000..067615c1b8
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_GetContentDimensions.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_GetContentDimensions.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_GetScreenshot.html b/dom/browser-element/mochitest/test_browserElement_oop_GetScreenshot.html
new file mode 100644
index 0000000000..81d3e19931
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_GetScreenshot.html
@@ -0,0 +1,20 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=753595
+-->
+<head>
+  <title>Test for Bug 753595</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=753595">Mozilla Bug 753595</a>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=878003">Mozilla Bug 878003</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_GetScreenshot.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_GetScreenshotDppx.html b/dom/browser-element/mochitest/test_browserElement_oop_GetScreenshotDppx.html
new file mode 100644
index 0000000000..9d30fc5411
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_GetScreenshotDppx.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=959066
+-->
+<head>
+  <title>Test for Bug 959066</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=959066">Mozilla Bug 959066</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_GetScreenshotDppx.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Iconchange.html b/dom/browser-element/mochitest/test_browserElement_oop_Iconchange.html
new file mode 100644
index 0000000000..2f17287de4
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Iconchange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=719461
+-->
+<head>
+  <title>Test for Bug 719461</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=719461">Mozilla Bug 719461</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Iconchange.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_LoadEvents.html b/dom/browser-element/mochitest/test_browserElement_oop_LoadEvents.html
new file mode 100644
index 0000000000..c6daf805e1
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_LoadEvents.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=710231
+-->
+<head>
+  <title>Test for Bug 710231</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=710231">Mozilla Bug 710231</a>
+
+<script type="application/javascript;version1.7" src="browserElement_LoadEvents.js"></script>
+
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Manifestchange.html b/dom/browser-element/mochitest/test_browserElement_oop_Manifestchange.html
new file mode 100644
index 0000000000..64200bd48d
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Manifestchange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=982800
+-->
+<head>
+  <title>Test for Bug 982800</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=982800">Mozilla Bug 982800</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Manifestchange.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Metachange.html b/dom/browser-element/mochitest/test_browserElement_oop_Metachange.html
new file mode 100644
index 0000000000..d799a52e46
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Metachange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=962626
+-->
+<head>
+  <title>Test for Bug 962626</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=962626">Mozilla Bug 962626</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Metachange.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_NextPaint.html b/dom/browser-element/mochitest/test_browserElement_oop_NextPaint.html
new file mode 100644
index 0000000000..8144819f23
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_NextPaint.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 808231</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_NextPaint.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_NoAudioTrack.html b/dom/browser-element/mochitest/test_browserElement_oop_NoAudioTrack.html
new file mode 100644
index 0000000000..90782bc63f
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_NoAudioTrack.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Bug 1227051 - No audio track video shouldn't register the AudioChannelAgent</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_NoAudioTrack.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenMixedProcess.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenMixedProcess.html
new file mode 100644
index 0000000000..cefe06c3e3
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_OpenMixedProcess.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 776129</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenMixedProcess.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenNamed.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenNamed.html
new file mode 100644
index 0000000000..bbe12545c7
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_OpenNamed.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenNamed.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenTab.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenTab.html
new file mode 100644
index 0000000000..85b979bd0a
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_OpenTab.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1144015
+-->
+<head>
+  <title>Test for Bug 1144015</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1144015">Mozilla Bug 1144015</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_OpenTab.js">
+</script>
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenWindow.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindow.html
new file mode 100644
index 0000000000..7c249792f8
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindow.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindow.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowDifferentOrigin.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowDifferentOrigin.html
new file mode 100644
index 0000000000..327ff8960f
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowDifferentOrigin.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowDifferentOrigin.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowEmpty.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowEmpty.html
new file mode 100644
index 0000000000..03738de71c
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowEmpty.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 1216937</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowEmpty.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowInFrame.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowInFrame.html
new file mode 100644
index 0000000000..e2c02d4a9d
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowInFrame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowInFrame.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowRejected.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowRejected.html
new file mode 100644
index 0000000000..a96b378f6f
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowRejected.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowRejected.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowRejected2.html b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowRejected2.html
new file mode 100644
index 0000000000..a96b378f6f
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_OpenWindowRejected2.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_OpenWindowRejected.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Opensearch.html b/dom/browser-element/mochitest/test_browserElement_oop_Opensearch.html
new file mode 100644
index 0000000000..23f21ed832
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Opensearch.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=883002
+-->
+<head>
+  <title>Test for Bug 883002</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=883002">Mozilla Bug 883002</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Opensearch.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_PrivateBrowsing.html b/dom/browser-element/mochitest/test_browserElement_oop_PrivateBrowsing.html
new file mode 100644
index 0000000000..0947fd7c71
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_PrivateBrowsing.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=832700
+-->
+<head>
+  <title>Test for Bug 832700</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=832700">Mozilla Bug 832700</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_PrivateBrowsing.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_PromptCheck.html b/dom/browser-element/mochitest/test_browserElement_oop_PromptCheck.html
new file mode 100644
index 0000000000..476c7e2c28
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_PromptCheck.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=741587
+-->
+<head>
+  <title>Test for Bug 741587</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=741587">Mozilla Bug 741587</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_PromptCheck.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_PromptConfirm.html b/dom/browser-element/mochitest/test_browserElement_oop_PromptConfirm.html
new file mode 100644
index 0000000000..b29a520259
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_PromptConfirm.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=741587
+-->
+<head>
+  <title>Test for Bug 741587</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=741587">Mozilla Bug 741587</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_PromptConfirm.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Proxy.html b/dom/browser-element/mochitest/test_browserElement_oop_Proxy.html
new file mode 100644
index 0000000000..05a416eeea
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Proxy.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1196654
+-->
+<head>
+  <title>Test for Bug 1196654</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1196654">Mozilla Bug 1196654</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Proxy.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_PurgeHistory.html b/dom/browser-element/mochitest/test_browserElement_oop_PurgeHistory.html
new file mode 100644
index 0000000000..cf606fd80e
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_PurgeHistory.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_PurgeHistory.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Reload.html b/dom/browser-element/mochitest/test_browserElement_oop_Reload.html
new file mode 100644
index 0000000000..75b912b19a
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Reload.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_Reload.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_ReloadPostRequest.html b/dom/browser-element/mochitest/test_browserElement_oop_ReloadPostRequest.html
new file mode 100644
index 0000000000..d26e7a0b5c
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_ReloadPostRequest.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_ReloadPostRequest.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_RemoveBrowserElement.html b/dom/browser-element/mochitest/test_browserElement_oop_RemoveBrowserElement.html
new file mode 100644
index 0000000000..8ccbe09a76
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_RemoveBrowserElement.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=787517
+-->
+<head>
+  <title>Test for Bug 787517</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=787517">Mozilla Bug 787517</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_RemoveBrowserElement.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_ScrollEvent.html b/dom/browser-element/mochitest/test_browserElement_oop_ScrollEvent.html
new file mode 100644
index 0000000000..e877922433
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_ScrollEvent.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=770847
+-->
+<head>
+  <title>Test for Bug 770847</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=770847">Mozilla Bug 770847</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_ScrollEvent.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_SecurityChange.html b/dom/browser-element/mochitest/test_browserElement_oop_SecurityChange.html
new file mode 100644
index 0000000000..ceaa6a40ea
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_SecurityChange.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_SecurityChange.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_SendEvent.html b/dom/browser-element/mochitest/test_browserElement_oop_SendEvent.html
new file mode 100644
index 0000000000..38d16a9da0
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_SendEvent.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=774809
+-->
+<head>
+  <title>Test for Bug 774809</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=774809">Mozilla Bug 774809</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_SendEvent.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_SetInputMethodActive.html b/dom/browser-element/mochitest/test_browserElement_oop_SetInputMethodActive.html
new file mode 100644
index 0000000000..5d4b45bc83
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_SetInputMethodActive.html
@@ -0,0 +1,14 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 905573</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_SetInputMethodActive.js">
+</script>
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_SetVisible.html b/dom/browser-element/mochitest/test_browserElement_oop_SetVisible.html
new file mode 100644
index 0000000000..a2220d1b31
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_SetVisible.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=702880
+-->
+ <head>
+  <title>Test for Bug 702880</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=753595">Mozilla Bug 702880</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_SetVisible.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_SetVisibleFrames.html b/dom/browser-element/mochitest/test_browserElement_oop_SetVisibleFrames.html
new file mode 100644
index 0000000000..b6477c8706
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_SetVisibleFrames.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 762939</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_SetVisibleFrames.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_SetVisibleFrames2.html b/dom/browser-element/mochitest/test_browserElement_oop_SetVisibleFrames2.html
new file mode 100644
index 0000000000..108080f508
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_SetVisibleFrames2.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 762939</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_SetVisibleFrames2.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Stop.html b/dom/browser-element/mochitest/test_browserElement_oop_Stop.html
new file mode 100644
index 0000000000..3425944e8a
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Stop.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test of browser element.</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_Stop.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_TargetBlank.html b/dom/browser-element/mochitest/test_browserElement_oop_TargetBlank.html
new file mode 100644
index 0000000000..916ed312b7
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_TargetBlank.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for mozbrowser</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_TargetBlank.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_TargetTop.html b/dom/browser-element/mochitest/test_browserElement_oop_TargetTop.html
new file mode 100644
index 0000000000..6c99f1c21e
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_TargetTop.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 771273</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_TargetTop.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_ThemeColor.html b/dom/browser-element/mochitest/test_browserElement_oop_ThemeColor.html
new file mode 100644
index 0000000000..4075ce58dc
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_ThemeColor.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1013913
+-->
+<head>
+  <title>Test for Bug 1013913</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1013913">Mozilla Bug 1013913</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_ThemeColor.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Titlechange.html b/dom/browser-element/mochitest/test_browserElement_oop_Titlechange.html
new file mode 100644
index 0000000000..1fdde48c11
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Titlechange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=720157
+-->
+<head>
+  <title>Test for Bug 720157</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=720157">Mozilla Bug 720157</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_Titlechange.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_TopBarrier.html b/dom/browser-element/mochitest/test_browserElement_oop_TopBarrier.html
new file mode 100644
index 0000000000..8756b44559
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_TopBarrier.html
@@ -0,0 +1,20 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=725796
+-->
+<head>
+  <title>Test for Bug 725796</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=725796">Mozilla Bug 725796</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_TopBarrier.js">
+</script>
+
+</body>
+</html>
+
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_Viewmode.html b/dom/browser-element/mochitest/test_browserElement_oop_Viewmode.html
new file mode 100644
index 0000000000..286dd39898
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_Viewmode.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1162844
+-->
+<head>
+  <title>Test for Bug 1162844</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1162844">Mozilla Bug 1162844</a>
+
+<script type="application/javascript;version=1.7" src="browserElement_Viewmode.js">
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_VisibilityChange.html b/dom/browser-element/mochitest/test_browserElement_oop_VisibilityChange.html
new file mode 100644
index 0000000000..546882c1cf
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_VisibilityChange.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=868816
+-->
+<head>
+  <title>Test for Bug 868816</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=868816">Mozilla Bug 868816</a>
+
+<script type="application/javascript;version=1.7" src='browserElement_VisibilityChange.js'>
+</script>
+
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptions.html b/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptions.html
new file mode 100644
index 0000000000..36479ee06d
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptions.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 770239</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_XFrameOptions.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptionsAllowFrom.html b/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptionsAllowFrom.html
new file mode 100644
index 0000000000..801c7879f1
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptionsAllowFrom.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 690168</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_XFrameOptionsAllowFrom.js">
+</script>
+</body>
+</html>
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptionsDeny.html b/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptionsDeny.html
new file mode 100644
index 0000000000..edd91dbd77
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptionsDeny.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 770239</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_XFrameOptionsDeny.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptionsSameOrigin.html b/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptionsSameOrigin.html
new file mode 100644
index 0000000000..e0ecbabc4e
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_XFrameOptionsSameOrigin.html
@@ -0,0 +1,13 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 770239</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.7" src="browserElement_XFrameOptionsSameOrigin.js">
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_getWebManifest.html b/dom/browser-element/mochitest/test_browserElement_oop_getWebManifest.html
new file mode 100644
index 0000000000..4ee13d9245
--- /dev/null
+++ b/dom/browser-element/mochitest/test_browserElement_oop_getWebManifest.html
@@ -0,0 +1,16 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for Bug 1169633</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="/tests/dom/browser-element/mochitest/browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<script type="application/javascript;version=1.8"
+  src="async.js"></script>
+<script type="application/javascript;version=1.8"
+  src="browserElement_getWebManifest.js">
+</script>
+</body>
+</html>