Fire overflowchanged events at raf timing

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 3584 matching lines @@
     return domWindow->getAttributeEventListener(eventType, isolatedWorld);
 }
 
 EventQueue* Document::eventQueue() const
 {
     if (!m_domWindow)
         return 0;
     return m_domWindow->eventQueue();
 }
 
-void Document::scheduleAnimationFrameEvent(PassRefPtr<Event> event)
+void Document::enqueueAnimationFrameEvent(PassRefPtr<Event> event)
 {
-    ensureScriptedAnimationController().scheduleEvent(event);
+    ensureScriptedAnimationController().enqueueEvent(event);
 }
 
 void Document::enqueueScrollEventForNode(Node* target)
 {
     // Per the W3C CSSOM View Module only scroll events fired at the document should bubble.
     RefPtr<Event> scrollEvent = target->isDocumentNode() ? Event::createBubble(EventTypeNames::scroll) : Event::create(EventTypeNames::scroll);
     scrollEvent->setTarget(target);
-    scheduleAnimationFrameEvent(scrollEvent.release());
+    ensureScriptedAnimationController().enqueuePerFrameEvent(scrollEvent.release());
+}
+
+void Document::enqueueResizeEvent()
+{
+    RefPtr<Event> event = Event::create(EventTypeNames::resize);
+    event->setTarget(domWindow());
+    ensureScriptedAnimationController().enqueuePerFrameEvent(event.release());
 }
 
 PassRefPtr<Event> Document::createEvent(const String& eventType, ExceptionState& exceptionState)
 {
     RefPtr<Event> event = EventFactory::create(eventType);
     if (event)
         return event.release();
 
     exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError);
     return 0;
@@ skipping 1564 matching lines @@
 void Document::modifiedStyleSheet(StyleSheet* sheet, RecalcStyleTime when, StyleResolverUpdateMode updateMode)
 {
     if (!isActive())
         return;
 
     styleEngine()->modifiedStyleSheet(sheet);
     styleResolverChanged(when, updateMode);
 }
 
 } // namespace WebCore