backport UXP Issue #1124: Remove Dev Edition

21 files changed, 3 insertions, 1087 deletions

diff --git a/app/profile/iceweasel-uxp.js b/app/profile/iceweasel-uxp.js
index be472a0..e46bea8 100644
--- a/app/profile/iceweasel-uxp.js
+++ b/app/profile/iceweasel-uxp.js
@@ -973,13 +973,6 @@ pref("services.sync.syncedTabs.showRemoteIcons", true);
 
 pref("services.sync.sendTabToDevice.enabled", true);
 
-// Developer edition preferences
-#ifdef MOZ_DEV_EDITION
-sticky_pref("lightweightThemes.selectedThemeID", "firefox-devedition@mozilla.org");
-#else
-sticky_pref("lightweightThemes.selectedThemeID", "");
-#endif
-
 // Whether the character encoding menu is under the main Firefox button. This
 // preference is a string so that localizers can alter it.
 pref("browser.menu.showCharacterEncoding", "chrome://browser/locale/browser.properties");
diff --git a/base/content/browser.js b/base/content/browser.js
index fb52a14..e86c050 100755
--- a/base/content/browser.js
+++ b/base/content/browser.js
@@ -948,7 +948,6 @@ var gBrowserInit = {
     gPageStyleMenu.init();
     BrowserOnClick.init();
     FeedHandler.init();
-    DevEdition.init();
     AboutPrivateBrowsingListener.init();
     TrackingProtection.init();
     RefreshBlocker.init();
@@ -1449,8 +1448,6 @@ var gBrowserInit = {
 
     FeedHandler.uninit();
 
-    DevEdition.uninit();
-
     TrackingProtection.uninit();
 
     RefreshBlocker.uninit();
diff --git a/base/content/global-scripts.inc b/base/content/global-scripts.inc
index be0c510..ffaeeb4 100755
--- a/base/content/global-scripts.inc
+++ b/base/content/global-scripts.inc
@@ -14,7 +14,6 @@
 <script type="application/javascript" src="chrome://browser/content/browser-captivePortal.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-ctrlTab.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-customization.js"/>
-<script type="application/javascript" src="chrome://browser/content/browser-devedition.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-feeds.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-fullScreenAndPointerLock.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-fullZoom.js"/>
diff --git a/base/jar.mn b/base/jar.mn
index ae55eee..2dbd59c 100644
--- a/base/jar.mn
+++ b/base/jar.mn
@@ -66,7 +66,6 @@ browser.jar:
         content/browser/browser-ctrlTab.js            (content/browser-ctrlTab.js)
         content/browser/browser-customization.js      (content/browser-customization.js)
         content/browser/browser-data-submission-info-bar.js (content/browser-data-submission-info-bar.js)
-        content/browser/browser-devedition.js         (content/browser-devedition.js)
         content/browser/browser-feeds.js              (content/browser-feeds.js)
         content/browser/browser-fullScreenAndPointerLock.js  (content/browser-fullScreenAndPointerLock.js)
         content/browser/browser-fullZoom.js           (content/browser-fullZoom.js)
diff --git a/components/customizableui/CustomizableUI.jsm b/components/customizableui/CustomizableUI.jsm
index 67dd5df..ef5b88e 100644
--- a/components/customizableui/CustomizableUI.jsm
+++ b/components/customizableui/CustomizableUI.jsm
@@ -201,9 +201,7 @@ var CustomizableUIInternal = {
       "add-ons-button",
     ];
 
-    if (!AppConstants.MOZ_DEV_EDITION) {
-      panelPlacements.splice(-1, 0, "developer-button");
-    }
+     panelPlacements.splice(-1, 0, "developer-button");
 
     let showCharacterEncoding = Services.prefs.getComplexValue(
       "browser.menu.showCharacterEncoding",
@@ -228,10 +226,6 @@ var CustomizableUIInternal = {
       "home-button",
     ];
 
-    if (AppConstants.MOZ_DEV_EDITION) {
-      navbarPlacements.splice(2, 0, "developer-button");
-    }
-
     // Place this last, when createWidget is called for pocket, it will
     // append to the toolbar.
     if (Services.prefs.getPrefType("extensions.pocket.enabled") != Services.prefs.PREF_INVALID &&
diff --git a/components/nsBrowserGlue.js b/components/nsBrowserGlue.js
index b85e94d..66a770e 100644
--- a/components/nsBrowserGlue.js
+++ b/components/nsBrowserGlue.js
@@ -565,19 +565,6 @@ BrowserGlue.prototype = {
     // Ensure we keep track of places/pw-mananager undo by init'ing this early.
     Cu.import("resource:///modules/AutoMigrate.jsm");
 
-    if (!AppConstants.RELEASE_OR_BETA) {
-      let themeName = gBrowserBundle.GetStringFromName("deveditionTheme.name");
-      let vendorShortName = gBrandBundle.GetStringFromName("vendorShortName");
-
-      LightweightThemeManager.addBuiltInTheme({
-        id: "firefox-devedition@mozilla.org",
-        name: themeName,
-        headerURL: "resource:///chrome/browser/content/browser/defaultthemes/devedition.header.png",
-        iconURL: "resource:///chrome/browser/content/browser/defaultthemes/devedition.icon.png",
-        author: vendorShortName,
-      });
-    }
-
     TabCrashHandler.init();
 
     Services.obs.notifyObservers(null, "browser-ui-startup-complete", "");
@@ -910,10 +897,6 @@ BrowserGlue.prototype = {
 
   // All initial windows have opened.
   _onWindowsRestored: function BG__onWindowsRestored() {
-    if (AppConstants.MOZ_DEV_EDITION) {
-      this._createExtraDefaultProfile();
-    }
-
     this._initServiceDiscovery();
 
     // Show update notification, if needed.
@@ -1035,40 +1018,6 @@ BrowserGlue.prototype = {
     E10SAccessibilityCheck.onWindowsRestored();
   },
 
-  _createExtraDefaultProfile: function () {
-    if (!AppConstants.MOZ_DEV_EDITION) {
-      return;
-    }
-    // If Developer Edition is the only installed Firefox version and no other
-    // profiles are present, create a second one for use by other versions.
-    // This helps Firefox versions earlier than 35 avoid accidentally using the
-    // unsuitable Developer Edition profile.
-    let profileService = Cc["@mozilla.org/toolkit/profile-service;1"]
-                         .getService(Ci.nsIToolkitProfileService);
-    let profileCount = profileService.profileCount;
-    if (profileCount == 1 && profileService.selectedProfile.name != "default") {
-      let newProfile;
-      try {
-        newProfile = profileService.createProfile(null, "default");
-        profileService.defaultProfile = newProfile;
-        profileService.flush();
-      } catch (e) {
-        Cu.reportError("Could not create profile 'default': " + e);
-      }
-      if (newProfile) {
-        // We don't want a default profile with Developer Edition settings, an
-        // empty profile directory will do. The profile service of the other
-        // Firefox will populate it with its own stuff.
-        let newProfilePath = newProfile.rootDir.path;
-        OS.File.removeDir(newProfilePath).then(() => {
-          return OS.File.makeDir(newProfilePath);
-        }).then(null, e => {
-          Cu.reportError("Could not empty profile 'default': " + e);
-        });
-      }
-    }
-  },
-
   _onQuitRequest: function BG__onQuitRequest(aCancelQuit, aQuitType) {
     // If user has already dismissed quit request, then do nothing
     if ((aCancelQuit instanceof Ci.nsISupportsPRBool) && aCancelQuit.data)
@@ -1828,14 +1777,8 @@ BrowserGlue.prototype = {
          defaultThemeSelected = Services.prefs.getCharPref("general.skins.selectedSkin") == "classic/1.0";
       } catch (e) {}
 
-      // If we are on the devedition channel, the devedition theme is on by
-      // default.  But we need to handle the case where they didn't want it
-      // applied, and unapply the theme.
-      let userChoseToNotUseDeveditionTheme =
-        !defaultThemeSelected ||
-        (lightweightThemeSelected && selectedThemeID != "firefox-devedition@mozilla.org");
-
-      if (userChoseToNotUseDeveditionTheme && selectedThemeID == "firefox-devedition@mozilla.org") {
+      // If we have the dev edition theme selected, reset it.
+      if (selectedThemeID == "firefox-devedition@mozilla.org") {
         Services.prefs.setCharPref("lightweightThemes.selectedThemeID", "");
       }
 
diff --git a/components/preferences/in-content/main.js b/components/preferences/in-content/main.js
index bac771b..510bf73 100644
--- a/components/preferences/in-content/main.js
+++ b/components/preferences/in-content/main.js
@@ -78,18 +78,6 @@ var gMainPane = {
     setEventListener("chooseFolder", "command",
                      gMainPane.chooseFolder);
 
-    if (AppConstants.MOZ_DEV_EDITION) {
-      let uAppData = OS.Constants.Path.userApplicationDataDir;
-      let ignoreSeparateProfile = OS.Path.join(uAppData, "ignore-dev-edition-profile");
-
-      setEventListener("separateProfileMode", "command", gMainPane.separateProfileModeChange);
-      let separateProfileModeCheckbox = document.getElementById("separateProfileMode");
-      setEventListener("getStarted", "click", gMainPane.onGetStarted);
-
-      OS.File.stat(ignoreSeparateProfile).then(() => separateProfileModeCheckbox.checked = false,
-                                               () => separateProfileModeCheckbox.checked = true);
-    }
-
     // Notify observers that the UI is now ready
     Components.classes["@mozilla.org/observer-service;1"]
               .getService(Components.interfaces.nsIObserverService)
@@ -101,57 +89,6 @@ var gMainPane = {
     // **STUB**
   },
 
-  separateProfileModeChange: function ()
-  {
-    if (AppConstants.MOZ_DEV_EDITION) {
-      function quitApp() {
-        Services.startup.quit(Ci.nsIAppStartup.eAttemptQuit |  Ci.nsIAppStartup.eRestartNotSameProfile);
-      }
-      function revertCheckbox(error) {
-        separateProfileModeCheckbox.checked = !separateProfileModeCheckbox.checked;
-        if (error) {
-          Cu.reportError("Failed to toggle separate profile mode: " + error);
-        }
-      }
-      function createOrRemoveSpecialDevEditionFile(onSuccess) {
-        let uAppData = OS.Constants.Path.userApplicationDataDir;
-        let ignoreSeparateProfile = OS.Path.join(uAppData, "ignore-dev-edition-profile");
-
-        if (separateProfileModeCheckbox.checked) {
-          OS.File.remove(ignoreSeparateProfile).then(onSuccess, revertCheckbox);
-        } else {
-          OS.File.writeAtomic(ignoreSeparateProfile, new Uint8Array()).then(onSuccess, revertCheckbox);
-        }
-      }
-
-      let separateProfileModeCheckbox = document.getElementById("separateProfileMode");
-      let button_index = confirmRestartPrompt(separateProfileModeCheckbox.checked,
-                                              0, false, true);
-      switch (button_index) {
-        case CONFIRM_RESTART_PROMPT_CANCEL:
-          revertCheckbox();
-          return;
-        case CONFIRM_RESTART_PROMPT_RESTART_NOW:
-          const Cc = Components.classes, Ci = Components.interfaces;
-          let cancelQuit = Cc["@mozilla.org/supports-PRBool;1"]
-                             .createInstance(Ci.nsISupportsPRBool);
-          Services.obs.notifyObservers(cancelQuit, "quit-application-requested",
-                                        "restart");
-          if (!cancelQuit.data) {
-            createOrRemoveSpecialDevEditionFile(quitApp);
-            return;
-          }
-
-          // Revert the checkbox in case we didn't quit
-          revertCheckbox();
-          return;
-        case CONFIRM_RESTART_PROMPT_RESTART_LATER:
-          createOrRemoveSpecialDevEditionFile();
-          return;
-      }
-    }
-  },
-
   onGetStarted: function (aEvent) {
     if (AppConstants.MOZ_DEV_EDITION) {
       const Cc = Components.classes, Ci = Components.interfaces;
diff --git a/components/preferences/in-content/main.xul b/components/preferences/in-content/main.xul
index 8eca118..f695b30 100644
--- a/components/preferences/in-content/main.xul
+++ b/components/preferences/in-content/main.xul
@@ -112,17 +112,6 @@
           hidden="true">
   <caption><label>&startup.label;</label></caption>
 
-#ifdef MOZ_DEV_EDITION
-  <vbox id="separateProfileBox">
-    <checkbox id="separateProfileMode"
-              label="&separateProfileMode.label;"/>
-    <hbox align="center" class="indent">
-      <label id="useFirefoxSync">&useFirefoxSync.label;</label>
-      <label id="getStarted" class="text-link">&getStarted.label;</label>
-    </hbox>
-  </vbox>
-#endif
-
 #ifdef HAVE_SHELL_SERVICE
   <vbox id="defaultBrowserBox">
     <hbox align="center">
diff --git a/modules/ProcessHangMonitor.jsm b/modules/ProcessHangMonitor.jsm
index e048f5b..474c7c0 100644
--- a/modules/ProcessHangMonitor.jsm
+++ b/modules/ProcessHangMonitor.jsm
@@ -304,16 +304,6 @@ var ProcessHangMonitor = {
         }
       }];
 
-    if (AppConstants.MOZ_DEV_EDITION && report.hangType == report.SLOW_SCRIPT) {
-      buttons.push({
-        label: bundle.getString("processHang.button_debug.label"),
-        accessKey: bundle.getString("processHang.button_debug.accessKey"),
-        callback: function() {
-          ProcessHangMonitor.debugScript(win);
-        }
-      });
-    }
-
     nb.appendNotification(bundle.getString("processHang.label"),
                           "process-hang",
                           "chrome://browser/content/aboutRobots-icon.png",
diff --git a/themes/linux/devedition.css b/themes/linux/devedition.css
deleted file mode 100644
index 1f16d5d..0000000
--- a/themes/linux/devedition.css
+++ /dev/null
@@ -1,106 +0,0 @@
-% 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/.
-
-%include ../shared/devedition.inc.css
-
-:root {
-  --forwardbutton-width: 29px;
-}
-
-:root[devtoolstheme="light"] {
-  --urlbar-dropmarker-url: url("chrome://browser/skin/devedition/urlbar-history-dropmarker.svg");
-  --urlbar-dropmarker-region: rect(0px, 11px, 14px, 0px);
-  --urlbar-dropmarker-hover-region: rect(0, 22px, 14px, 11px);
-  --urlbar-dropmarker-active-region: rect(0px, 33px, 14px, 22px);
-  --urlbar-dropmarker-2x-url: url("chrome://browser/skin/devedition/urlbar-history-dropmarker.svg");
-  --urlbar-dropmarker-2x-region: rect(0px, 11px, 14px, 0px);
-  --urlbar-dropmarker-hover-2x-region: rect(0, 22px, 14px, 11px);
-  --urlbar-dropmarker-active-2x-region: rect(0px, 33px, 14px, 22px);
-}
-
-:root[devtoolstheme="dark"] .findbar-closebutton:not(:hover),
-:root[devtoolstheme="dark"] #sidebar-header > .close-icon:not(:hover),
-.tab-close-button[selected]:not(:hover) {
-  background-image: -moz-image-rect(url("chrome://global/skin/icons/close.svg"), 0, 80, 16, 64);
-}
-
-/* The menubar and tabs toolbar should match the devedition theme */
-#TabsToolbar,
-#toolbar-menubar {
-  -moz-appearance: none !important;
-}
-#main-menubar {
-  color: var(--chrome-color);
-}
-#main-menubar > menu:not([open]) {
-  color: inherit;
-}
-
-/* Allow buttons with -moz-appearance set to look normal on hover and open states */
-#navigator-toolbox .toolbarbutton-1:-moz-any(:hover, [open="true"]),
-#PlacesToolbar toolbarbutton.bookmark-item:-moz-any(:hover, [open="true"]) {
-  color: initial;
-}
-
-/* Square back and forward buttons */
-#back-button > .toolbarbutton-icon,
-#forward-button > .toolbarbutton-icon {
-  margin: 0;
-  border: 1px solid var(--chrome-nav-bar-controls-border-color);
-  padding: 2px 5px;
-  background: var(--chrome-nav-buttons-background);
-  box-shadow: none !important;
-}
-
-#forward-button > .toolbarbutton-icon {
-  border-inline-start: none;
-}
-
-/* Override a box shadow for disabled back button */
-#main-window:not([customizing]) #back-button[disabled] > .toolbarbutton-icon {
-  box-shadow: none !important;
-}
-
-#back-button:hover:not([disabled="true"]) > .toolbarbutton-icon,
-#forward-button:hover:not([disabled="true"]) > .toolbarbutton-icon {
-  background: var(--chrome-nav-buttons-hover-background) !important;
-}
-
-#back-button > .toolbarbutton-icon {
-  border-radius: 2px 0 0 2px !important;
-}
-
-.urlbar-history-dropmarker {
-  -moz-appearance: none;
-  padding: 0 3px;
-  list-style-image: var(--urlbar-dropmarker-url);
-  -moz-image-region: var(--urlbar-dropmarker-region);
-}
-
-/* Add the proper background for tab overflow */
-#alltabs-button,
-#new-tab-button {
-  background: var(--chrome-background-color);
-}
-
-#new-tab-button:hover > .toolbarbutton-icon {
-  border-color: transparent !important;
-}
-
-/* Prevent double border below tabs toolbar */
-#TabsToolbar:not([collapsed="true"]) + #nav-bar {
-  border-top-width: 0 !important;
-}
-
-/* Fix the bad-looking text-shadow in the sidebar header: */
-.sidebar-header,
-#sidebar-header {
-  text-shadow: none;
-}
-
-.ac-type-icon {
-  /* Left-align the type icon in awesomebar popup results with the icon in the
-     urlbar. */
-  margin-inline-start: 11px;
-}
diff --git a/themes/linux/jar.mn b/themes/linux/jar.mn
index 205fb8b..fbb6147 100644
--- a/themes/linux/jar.mn
+++ b/themes/linux/jar.mn
@@ -15,7 +15,6 @@ browser.jar:
 #endif
   skin/classic/browser/actionicon-tab.png
 * skin/classic/browser/browser.css
-* skin/classic/browser/devedition.css
 * skin/classic/browser/browser-lightweightTheme.css
   skin/classic/browser/click-to-play-warning-stripes.png
   skin/classic/browser/Info.png
diff --git a/themes/osx/devedition.css b/themes/osx/devedition.css
deleted file mode 100644
index c7a2bdd..0000000
--- a/themes/osx/devedition.css
+++ /dev/null
@@ -1,121 +0,0 @@
-% 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/.
-
-%include ../shared/devedition.inc.css
-
-:root {
-  --forwardbutton-width: 32px;
-}
-
-/* Use only 1px separator between nav toolbox and page content */
-#navigator-toolbox::after {
-  border-top-style: none;
-  margin-top: -1px;
-}
-
-/* Include extra space on left/right for dragging since there is no space above
-   the tabs */
-#main-window[tabsintitlebar] #TabsToolbar {
-  padding-left: 50px;
-  padding-right: 50px;
-  margin-bottom: 0; /* Don't overlap the inner highlight at the top of the nav-bar */
-}
-
-/* Get rid of 1px bright strip at the top of window */
-#main-window[tabsintitlebar] #titlebar-content {
-  background: var(--chrome-background-color);
-}
-
-/* Resize things so that the native titlebar is in line with the tabs */
-#main-window[tabsintitlebar] > #titlebar > #titlebar-content > #titlebar-buttonbox-container,
-#main-window[tabsintitlebar] > #titlebar > #titlebar-content > #titlebar-secondary-buttonbox > #titlebar-fullscreen-button {
-  margin-top: 6px;
-}
-
-/* Square back and forward buttons.  Need !important on these because there
-   are a lot of more specific selectors sprinkled around elsewhere for changing
-   background / shadows for different states */
-#back-button,
-#forward-button {
-  height: 24px !important;
-  box-shadow: none !important;
-  border: 1px solid var(--chrome-nav-bar-controls-border-color) !important;
-  background: var(--chrome-nav-buttons-background) !important;
-}
-
-#forward-button {
-  border-inline-start: none !important;
-  /* browser.css and friends set up the width of the button to be 32px.
-   * They then set margin-left to -2px to ensure the button is not too wide
-   * compared to the back button, and set padding-left to center the icon
-   * correctly.
-   * In our theme, the back and forward buttons are the same width, with the
-   * back button being 32px with 1px border on both sides. To ensure the
-   * forward button's content box looks like it is the same size with width
-   * set to 32px and a 1px border on only 1 side, we overlap by 1px, so both
-   * buttons end up with a content box that looks like it's 30px.
-   */
-  margin-left: -1px;
-  padding-left: 1px;
-}
-
-#forward-button > .toolbarbutton-icon {
-  margin-left: 0;
-  margin-right: 0;
-}
-
-#back-button:hover:not([disabled="true"]),
-#forward-button:hover:not([disabled="true"]) {
-  background: var(--chrome-nav-buttons-hover-background) !important;
-}
-
-#back-button {
-  border-radius: 3px 0 0 3px !important;
-  padding: 0 !important;
-  margin: 0 !important;
-}
-
-#back-button:hover:active:not([disabled="true"]) {
-  -moz-image-region: rect(18px, 54px, 36px, 36px);
-}
-
-/* Use smaller back button icon */
-@media (min-resolution: 2dppx) {
-  #back-button:hover:active:not([disabled="true"]) {
-    -moz-image-region: rect(36px, 108px, 72px, 72px);
-  }
-}
-
-/* Don't use the default background for tabs toolbar */
-#TabsToolbar {
-  -moz-appearance: none !important;
-}
-
-/* Prevent the hover styling from on the identity icon from overlapping the
-   urlbar border. */
-#identity-box {
-  margin-top: -1px !important;
-  margin-bottom: -1px !important;
-  padding-top: 3px !important;
-  padding-bottom: 3px !important;
-}
-
-:root[devtoolstheme="dark"] .findbar-closebutton:not(:hover),
-/* Tab styling - make sure to use an inverted icon for the selected tab
-   (brighttext only covers the unselected tabs) */
-.tab-close-button[selected=true]:not(:hover) {
-  -moz-image-region: rect(0, 64px, 16px, 48px);
-}
-@media (min-resolution: 2dppx) {
-  :root[devtoolstheme="dark"] .findbar-closebutton:not(:hover),
-  .tab-close-button[selected=true]:not(:hover) {
-    -moz-image-region: rect(0, 128px, 32px, 96px);
-  }
-}
-
-.ac-type-icon {
-  /* Left-align the type icon in awesomebar popup results with the icon in the
-     urlbar. */
-  margin-inline-start: 14px;
-}
diff --git a/themes/osx/jar.mn b/themes/osx/jar.mn
index 92d2cee..5dec655 100644
--- a/themes/osx/jar.mn
+++ b/themes/osx/jar.mn
@@ -13,7 +13,6 @@ browser.jar:
   skin/classic/browser/actionicon-tab.png
   skin/classic/browser/actionicon-tab@2x.png
 * skin/classic/browser/browser.css
-* skin/classic/browser/devedition.css
 * skin/classic/browser/browser-lightweightTheme.css
   skin/classic/browser/click-to-play-warning-stripes.png
   skin/classic/browser/Info.png
diff --git a/themes/preprocess-tab-svgs.pyc b/themes/preprocess-tab-svgs.pyc
index e07d857..d78dc7f 100644
--- a/themes/preprocess-tab-svgs.pyc
+++ b/themes/preprocess-tab-svgs.pyc
diff --git a/themes/shared/devedition.inc.css b/themes/shared/devedition.inc.css
deleted file mode 100644
index a5c0db9..0000000
--- a/themes/shared/devedition.inc.css
+++ /dev/null
@@ -1,311 +0,0 @@
-% 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/.
-
-/* devedition.css is loaded in browser.xul after browser.css when it is
-   preffed on.  The bulk of the styling is here in the shared file, but
-   there are overrides for each platform in their devedition.css files. */
-
-:root {
-  --tab-toolbar-navbar-overlap: 0px;
-  --navbar-tab-toolbar-highlight-overlap: 0px;
-  --space-above-tabbar: 0px;
-  --toolbarbutton-text-shadow: none;
-  --backbutton-urlbar-overlap: 0px;
-}
-
-:root[devtoolstheme="dark"] {
-  /* Chrome */
-  --chrome-background-color: #272b35;
-  --chrome-color: #F5F7FA;
-  --chrome-secondary-background-color: #393F4C;
-  --chrome-navigator-toolbox-separator-color: rgba(0,0,0,.2);
-  --chrome-nav-bar-separator-color: rgba(0,0,0,.2);
-  --chrome-nav-buttons-background: #252C33;
-  --chrome-nav-buttons-hover-background: #1B2127;
-  --chrome-nav-bar-controls-border-color: #1D2328;
-  --chrome-selection-color: #fff;
-  --chrome-selection-background-color: #5675B9;
-
-  /* Tabs */
-  --tabs-toolbar-color: #F5F7FA;
-  --tab-background-color: #272b35;
-  --tab-hover-background-color: #07090a;
-  --tab-selection-color: #f5f7fa;
-  --tab-selection-background-color: #5675B9;
-  --tab-selection-box-shadow: none;
-  --pinned-tab-glow: radial-gradient(22px at center calc(100% - 2px), rgba(76,158,217,0.9) 13%, rgba(0,0,0,0.4) 16%, transparent 70%);
-
-  /* Url and search bars */
-  --url-and-searchbar-background-color: #171B1F;
-  --urlbar-separator-color: #5F6670;
-  --urlbar-dropmarker-url: url("chrome://browser/skin/devedition/urlbar-history-dropmarker.svg");
-  --urlbar-dropmarker-region: rect(0px, 11px, 14px, 0px);
-  --urlbar-dropmarker-hover-region: rect(0, 22px, 14px, 11px);
-  --urlbar-dropmarker-active-region: rect(0px, 33px, 14px, 22px);
-  --urlbar-dropmarker-2x-url: url("chrome://browser/skin/devedition/urlbar-history-dropmarker.svg");
-  --urlbar-dropmarker-2x-region: rect(0px, 11px, 14px, 0px);
-  --urlbar-dropmarker-hover-2x-region: rect(0, 22px, 14px, 11px);
-  --urlbar-dropmarker-active-2x-region: rect(0px, 33px, 14px, 22px);
-}
-
-/* Override the lwtheme-specific styling for toolbar buttons */
-:root[devtoolstheme="dark"],
-:root[devtoolstheme="dark"] toolbar:-moz-lwtheme {
-  --toolbarbutton-hover-background: rgba(25,33, 38,.6) linear-gradient(rgba(25,33,38,.6), rgba(25,33,38,.6)) padding-box;
-  --toolbarbutton-hover-boxshadow: none;
-  --toolbarbutton-hover-bordercolor: rgba(25,33,38,.6);
-  --toolbarbutton-active-background: rgba(25,33,38,1) linear-gradient(rgba(25,33,38,1), rgba(25,33,38,1)) border-box;
-  --toolbarbutton-active-boxshadow: none;
-  --toolbarbutton-active-bordercolor: rgba(25,33,38,.8);
-  --toolbarbutton-checkedhover-backgroundcolor: #3C5283;
-
-}
-
-:root[devtoolstheme="light"] {
-  --url-and-searchbar-background-color: #fff;
-
-  --chrome-background-color: #E3E4E6;
-  --chrome-color: #18191a;
-  --chrome-secondary-background-color: #f5f6f7;
-  --chrome-navigator-toolbox-separator-color: #cccccc;
-  --chrome-nav-bar-separator-color: #B6B6B8;
-  --chrome-nav-buttons-background: #ffffff; /* --theme-body-background */
-  --chrome-nav-buttons-hover-background: #DADBDB;
-  --chrome-nav-bar-controls-border-color: #ccc;
-  --chrome-selection-color: #f5f7fa;
-  --chrome-selection-background-color: #4c9ed9;
-
-  --tab-background-color: #E3E4E6;
-  --tab-hover-background-color: #D7D8DA;
-  --tab-selection-color: #f5f7fa;
-  --tab-selection-background-color: #4c9ed9;
-  --tab-selection-box-shadow: none;
-  --pinned-tab-glow: radial-gradient(22px at center calc(100% - 2px), rgba(76,158,217,0.9) 13%, transparent 16%);
-}
-
-/* Override the lwtheme-specific styling for toolbar buttons */
-:root[devtoolstheme="light"],
-:root[devtoolstheme="light"] toolbar:-moz-lwtheme {
-  --toolbarbutton-hover-background: #eaeaea;
-  --toolbarbutton-hover-boxshadow: none;
-  --toolbarbutton-hover-bordercolor: rgba(0,0,0,0.1);
-  --toolbarbutton-active-background: #d7d7d8 border-box;
-  --toolbarbutton-active-boxshadow: none;
-  --toolbarbutton-active-bordercolor: rgba(0,0,0,0.15);
-  --toolbarbutton-checkedhover-backgroundcolor: #d7d7d8;
-}
-
-/* Give some space to drag the window around while customizing
-   (normal space to left and right of tabs doesn't work in this case) */
-#main-window[tabsintitlebar][customizing] {
-  --space-above-tabbar: 9px;
-}
-
-/* Override @tabCurveHalfWidth@ and @tabCurveWidth@.  XXX: Switch to a CSS variable once the perf is sorted out - bug 1088771 */
-.tab-background-middle {
-  border-left-width: 0;
-  border-right-width: 0;
-  margin: 0;
-}
-
-.tab-background,
-.tabs-newtab-button {
-  margin-inline-end: 0;
-  margin-inline-start: 0;
-}
-
-.tabbrowser-arrowscrollbox > .arrowscrollbox-scrollbox {
-  padding-inline-end: 0;
-  padding-inline-start: 0;
-}
-
-.tab-background-start[selected=true]::after,
-.tab-background-start[selected=true]::before,
-.tab-background-start,
-.tab-background-end,
-.tab-background-end[selected=true]::after,
-.tab-background-end[selected=true]::before {
-  width: 0;
-}
-
-.tab-background-start[selected=true]::after,
-.tab-background-end[selected=true]::after {
-  margin-inline-start: 0;
-}
-/* End override @tabCurveHalfWidth@ and @tabCurveWidth@ */
-
-#urlbar ::-moz-selection,
-#navigator-toolbox .searchbar-textbox ::-moz-selection,
-.browserContainer > findbar ::-moz-selection {
-  background-color: var(--chrome-selection-background-color);
-  color: var(--chrome-selection-color);
-}
-
-/* Change the base colors for the browser chrome */
-
-#tabbrowser-tabs,
-#TabsToolbar,
-#browser-panel {
-  background: var(--chrome-background-color);
-  color: var(--chrome-color);
-}
-
-#navigator-toolbox:-moz-lwtheme::after {
-  border-bottom-color: var(--chrome-navigator-toolbox-separator-color);
-}
-
-#navigator-toolbox > toolbar:not(#TabsToolbar):not(#toolbar-menubar),
-.browserContainer > findbar,
-#browser-bottombox {
-  background-color: var(--chrome-secondary-background-color) !important;
-  background-image: none !important;
-  color: var(--chrome-color);
-}
-
-/* Default findbar text color doesn't look good - Bug 1125677 */
-.browserContainer > findbar .findbar-find-status,
-.browserContainer > findbar .found-matches {
-  color: inherit;
-}
-
-#navigator-toolbox .toolbarbutton-1,
-.browserContainer > findbar .findbar-button,
-#PlacesToolbar toolbarbutton.bookmark-item {
-  color: var(--chrome-color);
-  text-shadow: var(--toolbarbutton-text-shadow);
-}
-
-/* Using toolbar[brighttext] instead of important to override linux */
-toolbar[brighttext] #downloads-indicator-counter {
-  text-shadow: var(--toolbarbutton-text-shadow);
-  color: var(--chrome-color);
-}
-
-#TabsToolbar {
-  text-shadow: none !important;
-}
-
-/* URL bar and search bar*/
-#urlbar,
-#navigator-toolbox .searchbar-textbox {
-  background-color: var(--url-and-searchbar-background-color) !important;
-  background-image: none !important;
-  color: inherit !important;
-  border: 1px solid var(--chrome-nav-bar-controls-border-color) !important;
-  box-shadow: none !important;
-}
-
-%filter substitution
-%define selectorPrefix :root[devtoolstheme="dark"] 
-%define selectorSuffix :-moz-lwtheme
-%define iconVariant -white
-%include identity-block/icons.inc.css
-
-#urlbar {
-  border-inline-start: none !important;
-  opacity: 1 !important;
-}
-
-window:not([chromehidden~="toolbar"]) #urlbar-wrapper {
-  overflow: -moz-hidden-unscrollable;
-  clip-path: none;
-  margin-inline-start: 0;
-}
-
-:root[devtoolstheme="dark"] #urlbar-zoom-button:hover {
-  background-color: rgba(255,255,255,.2);
-}
-
-:root[devtoolstheme="dark"] #urlbar-zoom-button:hover:active {
-  background-color: rgba(255,255,255,.3);
-}
-
-/* Nav bar specific stuff */
-#nav-bar {
-  margin-top: 0 !important;
-  border-top: none !important;
-  border-bottom: none !important;
-  border-radius: 0 !important;
-  box-shadow: 0 -1px var(--chrome-nav-bar-separator-color) !important;
-}
-
-/* No extra vertical padding for nav bar */
-#nav-bar-customization-target,
-#nav-bar {
-  padding-top: 0;
-  padding-bottom: 0;
-}
-
-/* Use smaller back button icon */
-#back-button {
-  -moz-image-region: rect(0, 54px, 18px, 36px);
-}
-
-@media (min-resolution: 1.1dppx) {
-  #back-button {
-    -moz-image-region: rect(0, 108px, 36px, 72px);
-  }
-}
-
-.tab-background {
-  visibility: hidden;
-}
-
-/* Tab separators */
-.tabbrowser-tab::after,
-.tabbrowser-tab::before {
-  background: currentColor;
-  opacity: 0.2 !important;
-}
-
-.tabbrowser-arrowscrollbox > .scrollbutton-down,
-.tabbrowser-arrowscrollbox > .scrollbutton-up {
-  background-color: var(--tab-background-color);
-  border-color: transparent;
-}
-
-.tabbrowser-tab {
-  /* We normally rely on other tab elements for pointer events, but this
-     theme hides those so we need it set here instead */
-  pointer-events: auto;
-}
-
-.tabbrowser-tab:-moz-any([image], [pinned]) > .tab-stack > .tab-content[attention]:not([selected="true"]),
-.tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([selected="true"]) {
-  background-image: var(--pinned-tab-glow);
-  background-position: center;
-  background-size: 100%;
-}
-
-.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([pinned]):not([selected="true"]) {
-  background-position: left bottom var(--tab-toolbar-navbar-overlap);
-  background-size: 34px 100%;
-}
-
-.tabbrowser-arrowscrollbox > .scrollbutton-down:not([disabled]):hover,
-.tabbrowser-arrowscrollbox > .scrollbutton-up:not([disabled]):hover,
-.tabbrowser-tab:hover {
-  background-color: var(--tab-hover-background-color);
-}
-
-.tabbrowser-tab[visuallyselected] {
-  color: var(--tab-selection-color) !important; /* Override color: inherit */
-  background-color: var(--tab-selection-background-color);
-}
-
-.tab-icon-sound[soundplaying],
-.tab-icon-sound[muted] {
-  filter: url(chrome://browser/skin/filters.svg#fill) !important; /* removes drop-shadow filter */
-}
-
-/* Don't need space for the tab curves (66px - 30px) */
-.tabs-newtab-button {
-  width: 36px;
-}
-
-.tabs-newtab-button:hover {
-  /* Important needed because !important is used in browser.css */
-  background-color: var(--tab-hover-background-color) !important;
-  background-image: none;
-}
diff --git a/themes/shared/devedition/urlbar-history-dropmarker.svg b/themes/shared/devedition/urlbar-history-dropmarker.svg
deleted file mode 100644
index 115fbf1..0000000
--- a/themes/shared/devedition/urlbar-history-dropmarker.svg
+++ /dev/null
@@ -1,22 +0,0 @@
-<!-- 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/. -->
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="33" height="14" viewBox="0 0 33 14">
-  <defs>
-    <polygon points="0,0 5.5,7 11,0" id="dropmarker-shape"/>
-  </defs>
-  <style>
-    use {
-      fill: #b6babf;
-    }
-    .hover {
-      fill: #61bdeb;
-    }
-    .active {
-      fill: #39ace6;
-    }
-  </style>
-  <use xlink:href="#dropmarker-shape" style="transform: translate(0, 4px)"/>
-  <use xlink:href="#dropmarker-shape" style="transform: translate(11px, 4px)" class="hover"/>
-  <use xlink:href="#dropmarker-shape" style="transform: translate(22px, 4px)" class="active"/>
-</svg>
diff --git a/themes/shared/jar.inc.mn b/themes/shared/jar.inc.mn
index 6c0d37e..0915096 100644
--- a/themes/shared/jar.inc.mn
+++ b/themes/shared/jar.inc.mn
@@ -137,6 +137,5 @@
   skin/classic/browser/privatebrowsing/private-browsing.svg    (../shared/privatebrowsing/private-browsing.svg)
   skin/classic/browser/privatebrowsing/tracking-protection-off.svg (../shared/privatebrowsing/tracking-protection-off.svg)
   skin/classic/browser/privatebrowsing/tracking-protection.svg (../shared/privatebrowsing/tracking-protection.svg)
-  skin/classic/browser/devedition/urlbar-history-dropmarker.svg (../shared/devedition/urlbar-history-dropmarker.svg)
   skin/classic/browser/urlbar-star.svg                         (../shared/urlbar-star.svg)
   skin/classic/browser/urlbar-tab.svg                          (../shared/urlbar-tab.svg)
diff --git a/themes/windows/browser.css b/themes/windows/browser.css
index 334265e..9a96552 100644
--- a/themes/windows/browser.css
+++ b/themes/windows/browser.css
@@ -193,9 +193,6 @@ toolbar:-moz-lwtheme {
 
 @media not all and (-moz-windows-compositor),
        not all and (-moz-windows-default-theme) {
-  /* Please keep the menu text colors in this media block in sync with
-   * devedition.css, minus the :not(:-moz-lwtheme) condition - see Bug 1165718.
-   */
   :root[tabsintitlebar]:not([inFullscreen]):not(:-moz-lwtheme) {
     --titlebar-text-color: CaptionText;
   }
diff --git a/themes/windows/devedition.css b/themes/windows/devedition.css
deleted file mode 100644
index bdf4bb8..0000000
--- a/themes/windows/devedition.css
+++ /dev/null
@@ -1,316 +0,0 @@
-% 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/.
-
-%include ../shared/devedition.inc.css
-
-:root {
-  --forwardbutton-width: 29px;
-}
-
-:root[devtoolstheme="dark"],
-:root[devtoolstheme="light"] {
-   /* Matches the #browser-border-start, #browser-border-end color */
-  --chrome-nav-bar-separator-color: rgba(10, 31, 51, 0.35);
-}
-
-/* The window background is white due to no accentcolor in the lightweight
-   theme. It can't be changed to transparent when there is no compositor
-   (Win 7 in classic / basic theme), or else dragging and focus become
-   broken. So instead just show the normal titlebar in that case, and override
-   the window color as transparent when the compositor is available. */
-@media not all and (-moz-windows-compositor) {
-  #main-window[tabsintitlebar] #titlebar:-moz-lwtheme {
-    visibility: visible;
-  }
-
-  #main-window {
-    background: var(--chrome-background-color) !important;
-  }
-}
-
-@media (-moz-windows-compositor) {
-  #main-window {
-    background: transparent !important;
-  }
-}
-
-#TabsToolbar::after {
-  display: none;
-}
-
-#back-button > .toolbarbutton-icon,
-#forward-button > .toolbarbutton-icon {
-  background: var(--chrome-nav-buttons-background) !important;
-  border-radius: 0 !important;
-  height: auto !important;
-  padding: var(--toolbarbutton-vertical-inner-padding) 5px !important;
-  margin: 0 !important;
-  border: 1px solid var(--chrome-nav-bar-controls-border-color) !important;
-  box-shadow: none !important;
-}
-
-#back-button > .toolbarbutton-icon {
-  /* 18px icon + 2 * 5px padding + 2 * 1px border */
-  width: 30px !important;
-}
-
-#forward-button > .toolbarbutton-icon {
-  /* 18px icon + 2 * 5px padding + 1 * 1px border */
-  width: 29px !important;
-}
-
-/* the normal theme adds box-shadow: <stuff> !important when the back-button is [open]. Fix: */
-#back-button[open="true"] > .toolbarbutton-icon {
-  box-shadow: none !important;
-}
-
-#forward-button > .toolbarbutton-icon {
-  border-inline-start: none !important;
-}
-
-/* Override a box shadow for disabled back button */
-#main-window:not([customizing]) #back-button[disabled] > .toolbarbutton-icon {
-  box-shadow: none !important;
-}
-
-/* Override !important properties for hovered back button */
-#main-window #back-button:hover:not([disabled="true"]) > .toolbarbutton-icon,
-#main-window #forward-button:hover:not([disabled="true"]) > .toolbarbutton-icon {
-  background: var(--chrome-nav-buttons-hover-background) !important;
-  box-shadow: none !important;
-}
-
-#back-button > .toolbarbutton-icon {
-  border-radius: 2px 0 0 2px !important;
-}
-
-#nav-bar .toolbarbutton-1:not([type=menu-button]),
-#nav-bar .toolbarbutton-1 > .toolbarbutton-menubutton-button,
-#nav-bar .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
-  padding-top: 2px;
-  padding-bottom: 2px;
-}
-
-.tabbrowser-tab {
-  background-color: var(--tab-background-color);
-}
-
-#toolbar-menubar {
-  text-shadow: none !important;
-}
-
-:root[devtoolstheme="dark"] .findbar-closebutton,
-:root[devtoolstheme="dark"] #sidebar-header > .close-icon,
-/* Tab styling - make sure to use an inverted icon for the selected tab
-   (brighttext only covers the unselected tabs) */
-.tab-close-button[selected=true] {
-  list-style-image: url("chrome://global/skin/icons/close-inverted.png");
-}
-
-@media (min-resolution: 1.1dppx) {
-  :root[devtoolstheme="dark"] .findbar-closebutton,
-  :root[devtoolstheme="dark"] #sidebar-header > .close-icon,
-  .tab-close-button[selected=true] {
-    list-style-image: url("chrome://global/skin/icons/close-inverted@2x.png");
-  }
-}
-
-@media (-moz-os-version: windows-win7),
-       (-moz-os-version: windows-win8) {
-  :root {
-    --space-above-tabbar: 15px;
-  }
-
-  /* It'd be nice if there was an element in the scrollbox's inner content
-     that collapsed to the current width of the tabs. Since there isn't we
-     need to handle overflowing and non-overflowing tabs separately.
-
-     In the case of overflowing tabs, set a border-top on the entire container,
-     otherwise we need to set it on each element individually */
-  #main-window[sizemode=normal] .tabbrowser-tabs[overflow="true"] {
-    background-clip: padding-box;
-    border-top: 1px solid var(--chrome-nav-bar-separator-color);
-    border-inline-end: 1px solid var(--chrome-nav-bar-separator-color);
-    background-color: var(--tab-background-color); /* Make sure there is no transparent gap during tab close animation */
-  }
-
-  /* Add a border to the left of the first tab (or scroll arrow).  Using .tabbrowser-tabs
-     instead of #TabsToolbar because it will work even in customize mode. */
-  #main-window[sizemode=normal] .tabbrowser-tabs {
-    background-clip: padding-box;
-    border-inline-start: 1px solid var(--chrome-nav-bar-separator-color);
-    border-inline-end: 1px solid transparent;
-  }
-
-  #main-window[sizemode=normal] .tabbrowser-tabs:not([overflow="true"]) .tabbrowser-tab,
-  #main-window[sizemode=normal] .tabbrowser-tabs:not([overflow="true"]) .tabbrowser-arrowscrollbox > .scrollbutton-down,
-  #main-window[sizemode=normal] .tabbrowser-tabs:not([overflow="true"]) .tabbrowser-arrowscrollbox > .scrollbutton-up,
-  #main-window[sizemode=normal] .tabbrowser-tabs:not([overflow="true"]) .tabs-newtab-button {
-    background-clip: padding-box;
-    border-top: 1px solid var(--chrome-nav-bar-separator-color);
-  }
-
-  /* Allow the border-top rule to take effect */
-  #main-window[sizemode=normal] .tabbrowser-tabs:not([overflow="true"]) .tabbrowser-tab {
-    -moz-border-top-colors: none;
-  }
-
-  #main-window[sizemode=normal] .tabbrowser-tabs:not([overflow="true"]) .closing-tabs-spacer {
-    background-clip: padding-box;
-    border-inline-start: 1px solid var(--chrome-nav-bar-separator-color);
-  }
-
-  .tabs-newtab-button {
-    background: var(--tab-background-color);
-  }
-
-  /* Use default window colors when in non-maximized mode */
-  #tabbrowser-tabs,
-  #TabsToolbar,
-  #browser-panel,
-  #titlebar-content {
-    background: transparent;
-  }
-
-  /* Ensure that the entire background is styled when maximized/fullscreen */
-  #main-window:not([sizemode="normal"]):not([customizing]) #browser-panel {
-    background: var(--chrome-background-color) !important;
-  }
-
-  /* The menu items need to be visible when the entire background is styled */
-  #main-window:not([sizemode="normal"]) #main-menubar {
-    color: var(--chrome-color);
-    background-color: transparent;
-  }
-
-  #main-window[sizemode="maximized"] #main-menubar > menu:not(:-moz-window-inactive) {
-    color: inherit;
-  }
-
-  /* Use proper menu text styling in Win7 classic mode (copied from browser.css) */
-  @media not all and (-moz-windows-compositor),
-         not all and (-moz-windows-default-theme) {
-    :root[tabsintitlebar]:not([inFullscreen]) {
-      --titlebar-text-color: CaptionText;
-    }
-
-    :root[tabsintitlebar]:not([inFullscreen]):-moz-window-inactive {
-      --titlebar-text-color: InactiveCaptionText;
-    }
-
-    #main-window[tabsintitlebar] #main-menubar > menu {
-      color: inherit;
-    }
-  }
-
-  /* Use less opacity than normal since this is very dark, and on top of the default toolbar color */
-  .tabbrowser-arrowscrollbox > .scrollbutton-up[disabled],
-  .tabbrowser-arrowscrollbox > .scrollbutton-down[disabled] {
-    opacity: .6;
-  }
-
-  /* Override scrollbutton gradients in normal and hover state */
-  .tabbrowser-arrowscrollbox > .scrollbutton-down,
-  .tabbrowser-arrowscrollbox > .scrollbutton-up {
-    background-image: none !important;
-    transition: none; /* scrollbutton-down has an unwanted transition on background color */
-  }
-
-  /* Restore draggable space on the sides of tabs when maximized */
-  #main-window[sizemode="maximized"] .tabbrowser-arrowscrollbox > .arrowscrollbox-scrollbox {
-    padding-left: 15px;
-    padding-right: 15px;
-  }
-
-  /* Override the padding that's intended to compensate for tabs that can overlap border-radius on nav-bar in default theme. */
-  #main-window[sizemode=normal]:not([customizing]) #TabsToolbar {
-    padding-left: 0;
-    padding-right: 0;
-  }
-}
-
-/* Restored windows get an artificial border on windows, because the lwtheme background
- * overlaps the regular window border. That isn't the case for us, so we avoid painting
- * over the native border with our custom borders: */
-#browser-panel {
-  /* These are !important to avoid specificity-wars with the selectors that add borders here. */
-  background-image: none !important;
-  border-top: none !important;
-}
-
-#navigator-toolbox {
-  /* The side borders on the toolbox also look out-of-place because we don't paint over
-   * the native background color at all, and these are !important for the same reason as above. */
-  border-left: none !important;
-  border-right: none !important;
-}
-
-/* Disable dragging like in the default theme: */
-#main-window[tabsintitlebar] #navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar):-moz-lwtheme {
-  -moz-window-dragging: no-drag;
-}
-
-/* The sidebar header has no background now that the background of the #browser-panel
- * has no image and is transparent. Fix: */
-.sidebar-header:-moz-lwtheme,
-#sidebar-header {
-  background-color: var(--chrome-background-color);
-  color: var(--chrome-color);
-}
-
-@media (-moz-os-version: windows-win7),
-       (-moz-os-version: windows-win8) {
-  /* And then we add them back on toolbars so that they don't look borderless: */
-  #main-window:not([customizing])[sizemode=normal] #navigator-toolbox::after,
-  #main-window:not([customizing])[sizemode=normal] #navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar) {
-    border-left: 1px solid hsla(209,67%,12%,0.35);
-    border-right: 1px solid hsla(209,67%,12%,0.35);
-  }
-}
-
-@media (-moz-os-version: windows-win10) {
-  /* Always keep draggable space on the sides of tabs since there is no top margin on Win10 */
-  #main-window .tabbrowser-arrowscrollbox > .arrowscrollbox-scrollbox {
-    padding-left: 15px;
-    padding-right: 15px;
-  }
-
-  /* Force white caption buttons for the dark theme on Windows 10 */
-  :root[devtoolstheme="dark"] #titlebar-min {
-    list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize-white);
-  }
-  :root[devtoolstheme="dark"] #titlebar-max {
-    list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize-white);
-  }
-  #main-window[devtoolstheme="dark"][sizemode="maximized"] #titlebar-max {
-    list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore-white);
-  }
-  :root[devtoolstheme="dark"] #titlebar-close {
-    list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-white);
-  }
-
-  /* ... and normal ones for the light theme on Windows 10 */
-  :root[devtoolstheme="light"] #titlebar-min {
-    list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize);
-  }
-  :root[devtoolstheme="light"] #titlebar-max {
-    list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize);
-  }
-  #main-window[devtoolstheme="light"][sizemode="maximized"] #titlebar-max {
-    list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore);
-  }
-  :root[devtoolstheme="light"] #titlebar-close {
-    list-style-image: url(chrome://browser/skin/caption-buttons.svg#close);
-  }
-
-  :root[devtoolstheme="light"] #titlebar-close:hover {
-    list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-white);
-  }
-}
-
-.ac-type-icon {
-  /* Left-align the type icon in awesomebar popup results with the icon in the
-     urlbar. */
-  margin-inline-start: 13px;
-}
diff --git a/themes/windows/jar.mn b/themes/windows/jar.mn
index 28c6c64..b0b9ca4 100644
--- a/themes/windows/jar.mn
+++ b/themes/windows/jar.mn
@@ -14,7 +14,6 @@ browser.jar:
   skin/classic/browser/actionicon-tab@2x.png
   skin/classic/browser/actionicon-tab-win7.png
 * skin/classic/browser/browser.css
-* skin/classic/browser/devedition.css
 * skin/classic/browser/browser-lightweightTheme.css
   skin/classic/browser/caption-buttons.svg
   skin/classic/browser/click-to-play-warning-stripes.png
diff --git a/tools/mozscreenshots/mozscreenshots/extension/configurations/DevEdition.jsm b/tools/mozscreenshots/mozscreenshots/extension/configurations/DevEdition.jsm
deleted file mode 100644
index fd981bc..0000000
--- a/tools/mozscreenshots/mozscreenshots/extension/configurations/DevEdition.jsm
+++ /dev/null
@@ -1,42 +0,0 @@
-/* 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/. */
-
-"use strict";
-
-this.EXPORTED_SYMBOLS = ["DevEdition"];
-
-const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
-const THEME_ID = "firefox-devedition@mozilla.org";
-
-Cu.import("resource://gre/modules/LightweightThemeManager.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/Task.jsm");
-
-this.DevEdition = {
-  init(libDir) {},
-
-  configurations: {
-    devEditionLight: {
-      applyConfig: Task.async(() => {
-        Services.prefs.setCharPref("devtools.theme", "light");
-        LightweightThemeManager.currentTheme = LightweightThemeManager.getUsedTheme(THEME_ID);
-        Services.prefs.setBoolPref("browser.devedition.theme.showCustomizeButton", true);
-      }),
-    },
-    devEditionDark: {
-      applyConfig: Task.async(() => {
-        Services.prefs.setCharPref("devtools.theme", "dark");
-        LightweightThemeManager.currentTheme = LightweightThemeManager.getUsedTheme(THEME_ID);
-        Services.prefs.setBoolPref("browser.devedition.theme.showCustomizeButton", true);
-      }),
-    },
-    devEditionOff: {
-      applyConfig: Task.async(() => {
-        Services.prefs.clearUserPref("devtools.theme");
-        LightweightThemeManager.currentTheme = null;
-        Services.prefs.clearUserPref("browser.devedition.theme.showCustomizeButton");
-      }),
-    },
-  },
-};