include RefCounted.h where needed, only.

third_party/WebKit/Source/core/html/track/TrackBase.h

 /*
  * Copyright (C) 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 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef TrackBase_h
 #define TrackBase_h
 
 #include "core/CoreExport.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebMediaPlayer.h"
-#include "wtf/RefCounted.h"
 #include "wtf/text/AtomicString.h"
 
 namespace blink {
 
 class HTMLMediaElement;
 
 class CORE_EXPORT TrackBase : public Supplementable<TrackBase> {
 public:
     virtual ~TrackBase();
 
@@ skipping 34 matching lines @@
     String m_id;
     Member<HTMLMediaElement> m_mediaElement;
 };
 
 #define DEFINE_TRACK_TYPE_CASTS(thisType, predicate) \
     DEFINE_TYPE_CASTS(thisType, TrackBase, track, track->type() == predicate, track.type() == predicate)
 
 } // namespace blink
 
 #endif // TrackBase_h