import changes from `dev' branch of rmottola/Arctic-Fox:

- Bug 1153939 - Avoid a race condition with setting nsBaseWidgets WidgetShutdownObserver widget pointer to null. Fixes a crash in nsBaseWidget::DestroyCompositor(). r=roc (342dfa066)
- Bug 1153570 - Remove AutoUseBasicLayerManager, which has been unused since 78b90e6c491b (bug 676241 part 3). r=mstange (0e9184271)
- Bug 1158284 - Utility in gfxPlatform to check for safe mode, lazier computation if we should accelerate and random cleanup of prefs usage. r=botond (3ca893900)
- Bug 1154739 - Rename flag to be more general. r=billm (c17156078)
- Bug 1154739 - On desktop platforms, only enable APZ in e10s windows. r=dvander,mstange (339d0fa64)
- remove auxclick event (54cbbdad2)
- more AUXCLICK remove (8a76b76ed)
- on drag exist is not idl (6c6a3d6c6)
- fix typo (a62de38d6)
- reinstantiate mouse events in PostHandle (387c3dd5b)
- Bug 1158425 - Rename _SYNTH event names. r=smaug (913a0f0d2)
- Bug 1136478 - Fire pagehide / pageshow events in content after swapping remote frame loaders. r=smaug. (f60d5955e)
- Bug 1083361 - Exposing a PromiseDebugging API to monitor uncaught DOM Promise. r=bz (a4d9a44e8)
- Bug 1058695 - Add member to nsIGlobalObject to detect it is going away. Make promises use it. r=bholley (8f77dbc4e)
- Bug 1156875 - patch 1 - URL.createObjectURL leaks in JS sandbox, r=bholley (f3a68da2c)
- Bug 1156875 - patch 2 - Unify the registration of blob URIs in WorkerPrivate and nsIGlobalObject, r=bent (66218f13a)
- Bug 1156875 - patch 3 - nsIGlobalObject members correctly ordered in the header file, r=bz (4936f05a6)
- Bug 1148033 - BroadcastChannel API should rispect the B2G app sandboxes, r=ehsan (d856835b9)
- Bug 1151480 - Correct check of the BroadcastChannel origin in b2g, r=ehsan (375f85fda)
- Bug 1161507 - BroadcastChannel should use origin+appId+IsInBrowserElement as key in b2g, r=sicking (5da9b5d1d)
- Bug 1144298 - Eliminate gratuitous gotos from Directory::RemoveInternal(). r=baku (055a8e240)
- Bug 1134309 - Fix slice handling when the first access is from a remote input stream, r=khuey. (62ceb80a7)
- Bug 1151597 - Step 0: Move IPC memory report generation number to parent-side actor. r=erahm (c1a49e2e1)
- Bug 1151597 - Step 1: Change memory reporting IPC to send one report per message. r=erahm (4797c3914)
- Bug 1151597 - Step 2: Don't start child process memory reports until parent is finished. r=erahm (d6df516b3)
- Bug 1088070 - Rename nsPrintingPromptServiceProxy to nsPrintingProxy. r=smaug. (7925069ae)
- Bug 1088070 - Move saving nsIPrintSettings after a print job to browser-content.js. r=Mossop. (9e7926158)
- Bug 1088070 - Instantiate print settings from the content process ins…tead of the parent. r=Mossop. (9152d5cef)
- Bug 1088070 - If saving print settings in the content process, proxy to the parent. r=smaug. (bc9e928ef)
- Bug 1129315 - require app processes update permissions after forked from nuwa. r=jdm (5333979c8)
- Bug 1069643 - Remove always failing call to GetCPOWManager from ContentChild::Init. r=billm a=ryanvm (1e9c9b72f)
- Bug 1110911 - Move Mac sandboxing code into plugin-container. r=cpearce,areinald,jld (f1830d72f)
- Bug 1149483: Change content sandbox level 1 to a working low integrity sandbox. r=tabraldes, r=billm (52e60db87)

dom/html/HTMLInputElement.cpp

@@ -3387,10 +3387,10 @@ HTMLInputElement::NeedToInitializeEditorForEvent(
 
   switch (aVisitor.mEvent->message) {
   case NS_MOUSE_MOVE:
-  case NS_MOUSE_ENTER:
-  case NS_MOUSE_EXIT:
-  case NS_MOUSE_ENTER_SYNTH:
-  case NS_MOUSE_EXIT_SYNTH:
+  case NS_MOUSE_ENTER_WIDGET:
+  case NS_MOUSE_EXIT_WIDGET:
+  case NS_MOUSE_OVER:
+  case NS_MOUSE_OUT:
   case NS_SCROLLPORT_UNDERFLOW:
   case NS_SCROLLPORT_OVERFLOW:
     return false;