Remove unused includes from core/html .cpp files

Source/core/html/shadow/MediaControlElementTypes.cpp

 /*
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 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.
@@ skipping 18 matching lines @@
 
 #include "config.h"
 
 #include "core/html/shadow/MediaControlElementTypes.h"
 
 #include "CSSValueKeywords.h"
 #include "HTMLNames.h"
 #include "core/css/StylePropertySet.h"
 #include "core/dom/ExceptionCodePlaceholder.h"
 #include "core/dom/MouseEvent.h"
-#include "core/rendering/RenderMedia.h"
-#include "core/rendering/RenderMediaControlElements.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 class Event;
 
 // FIXME: These constants may need to be tweaked to better match the seeking in the QuickTime plug-in.
 static const double cSkipRepeatDelay = 0.1;
 static const double cSkipTime = 0.2;
@@ skipping 181 matching lines @@
     if (value().toDouble() != volume)
         setValue(String::number(volume));
 }
 
 void MediaControlVolumeSliderElement::setClearMutedOnUserInteraction(bool clearMute)
 {
     m_clearMutedOnUserInteraction = clearMute;
 }
 
 } // namespace WebCore