9 files changed, 24 insertions, 10 deletions
diff --git a/application/palemoon/base/content/browser-addons.js b/application/palemoon/base/content/browser-addons.js
index f5c398f33a..630a0cf79c 100644
--- a/application/palemoon/base/content/browser-addons.js
+++ b/application/palemoon/base/content/browser-addons.js
@@ -263,7 +263,7 @@ var AddonsMgrListener = {
   onDisabled: function(aAddon) this.onUninstalled(),
 };
 
-
+#ifdef MOZ_PERSONAS
 var LightWeightThemeWebInstaller = {
   handleEvent: function (event) {
     switch (event.type) {
@@ -534,3 +534,4 @@ var LightweightThemeListener = {
     this.updateStyleSheet("url(" + themeData.headerURL + ")");
   },
 };
+#endif
diff --git a/application/palemoon/base/content/browser.js b/application/palemoon/base/content/browser.js
index 16b7c00199..a5d77a90de 100644
--- a/application/palemoon/base/content/browser.js
+++ b/application/palemoon/base/content/browser.js
@@ -1216,9 +1216,11 @@ var gBrowserInit = {
     placesContext.addEventListener("popuphiding", updateEditUIVisibility, false);
 #endif
 
+#ifdef MOZ_PERSONAS
     gBrowser.mPanelContainer.addEventListener("InstallBrowserTheme", LightWeightThemeWebInstaller, false, true);
     gBrowser.mPanelContainer.addEventListener("PreviewBrowserTheme", LightWeightThemeWebInstaller, false, true);
     gBrowser.mPanelContainer.addEventListener("ResetBrowserThemePreview", LightWeightThemeWebInstaller, false, true);
+#endif
 
     // Bug 666808 - AeroPeek support for e10s
     if (!gMultiProcessBrowser) {
diff --git a/application/palemoon/base/content/browser.xul b/application/palemoon/base/content/browser.xul
index ddc305a7b8..0a249afa97 100644
--- a/application/palemoon/base/content/browser.xul
+++ b/application/palemoon/base/content/browser.xul
@@ -53,8 +53,10 @@
         titlemodifier_privatebrowsing="&mainWindow.titlemodifier; &mainWindow.titlePrivateBrowsingSuffix;"
 #endif
         titlemenuseparator="&mainWindow.titlemodifiermenuseparator;"
+#ifdef MOZ_PERSONAS
         lightweightthemes="true"
         lightweightthemesfooter="browser-bottombox"
+#endif
         windowtype="navigator:browser"
         macanimationtype="document"
         screenX="4" screenY="4"
diff --git a/application/palemoon/configure.in b/application/palemoon/configure.in
index eb02af3c0d..9d820f6d4f 100644
--- a/application/palemoon/configure.in
+++ b/application/palemoon/configure.in
@@ -36,3 +36,16 @@ MOZ_ARG_DISABLE_BOOL(sync,
     MOZ_SERVICES_SYNC=,
     MOZ_SERVICES_SYNC=1)
 
+dnl ========================================================
+dnl = Disable Lightweight Themes
+dnl ========================================================
+MOZ_ARG_DISABLE_BOOL(personas,
+[  --disable-personas           Disable lightweight theme support],
+    MOZ_PERSONAS=,
+    MOZ_PERSONAS=1)
+
+if test -n "$MOZ_PERSONAS"; then
+    AC_DEFINE(MOZ_PERSONAS)
+fi
+
+AC_SUBST(MOZ_PERSONAS)
+\ No newline at end of file
diff --git a/application/palemoon/confvars.sh b/application/palemoon/confvars.sh
index 6216cba5b3..79681f0135 100644
--- a/application/palemoon/confvars.sh
+++ b/application/palemoon/confvars.sh
@@ -46,6 +46,9 @@ MOZ_PHOENIX=1
 # Browser Feature: Status bar Component
 MOZ_BROWSER_STATUSBAR=1
 
+# Lightweight Themes
+MOZ_PERSONAS=1
+
 # Browser Feature: Profile Migration Component
 MOZ_PROFILE_MIGRATOR=
 
diff --git a/build/moz.configure/old.configure b/build/moz.configure/old.configure
index 59dc8b57b6..326b2327e8 100644
--- a/build/moz.configure/old.configure
+++ b/build/moz.configure/old.configure
@@ -310,6 +310,7 @@ def old_configure_options(*options):
     # Below are configure flags used by Pale Moon
     '--disable-browser-statusbar',
     '--disable-sync',
+    '--disable-personas',
     
     # Below are configure flags used by Basilisk
     '--disable-webextensions',
diff --git a/js/src/jit/BaselineIC.cpp b/js/src/jit/BaselineIC.cpp
index d95d08edcd..2f20ffa4fe 100644
--- a/js/src/jit/BaselineIC.cpp
+++ b/js/src/jit/BaselineIC.cpp
@@ -289,7 +289,7 @@ DoTypeUpdateFallback(JSContext* cx, BaselineFrame* frame, ICUpdatedStub* stub, H
       case ICStub::SetProp_Native:
       case ICStub::SetProp_NativeAdd:
       case ICStub::SetProp_Unboxed: {
-        MOZ_ASSERT(obj->isNative() || obj->is<UnboxedPlainObject>());
+        MOZ_ASSERT(obj->isNative());
         jsbytecode* pc = stub->getChainFallback()->icEntry()->pc(script);
         if (*pc == JSOP_SETALIASEDVAR || *pc == JSOP_INITALIASEDLEXICAL)
             id = NameToId(EnvironmentCoordinateName(cx->caches.envCoordinateNameCache, script, pc));
diff --git a/js/src/jit/MIR.h b/js/src/jit/MIR.h
index 0992768bf4..9076339f15 100644
--- a/js/src/jit/MIR.h
+++ b/js/src/jit/MIR.h
@@ -3785,7 +3785,6 @@ class MObjectState
     MOZ_MUST_USE bool initFromTemplateObject(TempAllocator& alloc, MDefinition* undefinedVal);
 
     size_t numFixedSlots() const {
-        MOZ_ASSERT(!isUnboxed());
         return numFixedSlots_;
     }
     size_t numSlots() const {
diff --git a/js/src/jscompartment.cpp b/js/src/jscompartment.cpp
index a48bb0ffec..6024a1768f 100644
--- a/js/src/jscompartment.cpp
+++ b/js/src/jscompartment.cpp
@@ -112,13 +112,6 @@ JSCompartment::~JSCompartment()
     js_delete(nonSyntacticLexicalEnvironments_),
     js_free(enumerators);
 
-#ifdef DEBUG
-    // Avoid assertion destroying the unboxed layouts list if the embedding
-    // leaked GC things.
-    if (!rt->gc.shutdownCollectedEverything())
-        unboxedLayouts.clear();
-#endif
-
     runtime_->numCompartments--;
 }