Repaint video controls when buffering during pause.

Source/WebCore/html/shadow/MediaControlRootElementChromium.h

 /*
  * Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011 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:
  * 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
@@ skipping 66 matching lines @@
     void exitedFullscreen();
 
     void reportedError();
     void loadedMetadata();
     void changedClosedCaptionsVisibility();
 
     void showVolumeSlider();
     void updateTimeDisplay();
     void updateStatusDisplay();
 
+    void bufferingProgressed();
+
     virtual bool shouldHideControls();
 
 private:
     MediaControlRootElementChromium(HTMLMediaElement*);
 
     virtual void defaultEventHandler(Event*);
 
     virtual const AtomicString& shadowPseudoId() const;
 
     bool containsRelatedTarget(Event*);
@@ skipping 11 matching lines @@
 
     bool m_opaque;
     bool m_isMouseOverControls;
 };
 
 }
 
 #endif
 
 #endif