Fire overflowchanged events at raf timing

Source/core/page/EventHandler.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 152 matching lines @@
 
     bool handleTextInputEvent(const String& text, Event* underlyingEvent = 0, TextEventInputType = TextEventInputKeyboard);
     void defaultTextInputEventHandler(TextEvent*);
 
     void dragSourceEndedAt(const PlatformMouseEvent&, DragOperation);
 
     void focusDocumentView();
 
     void capsLockStateMayHaveChanged(); // Only called by FrameSelection
 
-    void sendResizeEvent(); // Only called in FrameView
-    void sendScrollEvent(); // Ditto
+    void sendScrollEvent(); // Only called in FrameView
 
     bool handleTouchEvent(const PlatformTouchEvent&);
 
     bool useHandCursor(Node*, bool isOverLink, bool shiftKey);
 
 private:
     static DragState& dragState();
 
     PassRefPtr<Clipboard> createDraggingClipboard() const;
 
@@ skipping 190 matching lines @@
     bool m_longTapShouldInvokeContextMenu;
     OwnPtr<IntPoint> m_lastSyntheticPinchAnchorCss;
     OwnPtr<IntPoint> m_lastSyntheticPinchAnchorDip;
     OwnPtr<IntPoint> m_lastSyntheticPanLocation;
     float m_syntheticPageScaleFactor;
 };
 
 } // namespace WebCore
 
 #endif // EventHandler_h