Repaint video controls when buffering during pause.

Source/WebCore/html/shadow/MediaControls.h

 /*
  * Copyright (C) 2011 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 52 matching lines @@
     virtual void reportedError() = 0;
     virtual void loadedMetadata() = 0;
     virtual void changedClosedCaptionsVisibility() = 0;
 
     virtual void showVolumeSlider() = 0;
     virtual void updateTimeDisplay() = 0;
     virtual void updateStatusDisplay() = 0;
 
     virtual bool shouldHideControls() = 0;
 
+    virtual void bufferingProgressed() = 0;
+
 protected:
     MediaControls(HTMLMediaElement*);
 
 private:
     MediaControls();
 
     virtual bool isMediaControls() const { return true; }
 };
 
 inline MediaControls* toMediaControls(Node* node)
 {
     ASSERT(!node || node->isMediaControls());
     return static_cast<MediaControls*>(node);
 }
 
 // This will catch anyone doing an unneccessary cast.
 void toMediaControls(const MediaControls*);
 
 }
 
 #endif
 
 #endif