Advance document lifecycle to CompositingClean prior to hit testing

Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1284 matching lines @@
 {
     // FIXME(bokan): crbug.com/371902 - These scale/pinch transforms shouldn't
     // be ad hoc and explicit.
     PinchViewport& pinchViewport = frame()->page()->frameHost().pinchViewport();
     FloatPoint unscaledPoint(point);
     unscaledPoint.scale(1 / view()->pageScaleFactor(), 1 / view()->pageScaleFactor());
     unscaledPoint.moveBy(pinchViewport.visibleRect().location());
 
     HitTestRequest request = HitTestRequest::Move | HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::IgnoreClipping;
     HitTestResult result(frame()->view()->windowToContents(roundedIntPoint(unscaledPoint)));
-    frame()->document()->layoutView()->layer()->hitTest(request, result);
+    frame()->document()->layoutView()->hitTest(request, result);

[qiankun, 2015/03/20 07:50:22]

Also advance to CompositingClean state here.

 
     if (Node* node = result.innerNode())
         return frame()->selection().selection().visiblePositionRespectingEditingBoundary(result.localPoint(), node);
     return VisiblePosition();
 }
 
 WebPlugin* WebLocalFrameImpl::focusedPluginIfInputMethodSupported()
 {
     WebPluginContainerImpl* container = WebLocalFrameImpl::pluginContainerFromNode(frame(), WebNode(frame()->document()->focusedElement()));
     if (container && container->supportsInputMethod())
@@ skipping 734 matching lines @@
 {
     m_frameWidget = frameWidget;
 }
 
 WebFrameWidgetImpl* WebLocalFrameImpl::frameWidget() const
 {
     return m_frameWidget;
 }
 
 } // namespace blink