Remove unused includes from core/html .cpp files

Source/core/html/track/InbandTextTrack.cpp

 /*
  * Copyright (C) 2012 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 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 
 #include "core/html/track/InbandTextTrack.h"
 
 #include <math.h>
-#include "core/dom/Document.h"
-#include "core/dom/Event.h"
 #include "core/dom/ExceptionCodePlaceholder.h"
 #include "core/html/track/TextTrackCueGeneric.h"
-#include "core/html/track/TextTrackCueList.h"
 #include "core/platform/Logging.h"
 #include "core/platform/graphics/InbandTextTrackPrivate.h"
-#include "core/platform/graphics/MediaPlayer.h"
 #include <wtf/UnusedParam.h>
 
 namespace WebCore {
 
 PassRefPtr<InbandTextTrack> InbandTextTrack::create(ScriptExecutionContext* context, TextTrackClient* client, PassRefPtr<InbandTextTrackPrivate> playerPrivate)
 {
     return adoptRef(new InbandTextTrack(context, client, playerPrivate));
 }
 
 InbandTextTrack::InbandTextTrack(ScriptExecutionContext* context, TextTrackClient* client, PassRefPtr<InbandTextTrackPrivate> tracksPrivate)
@@ skipping 132 matching lines @@
     cue->setCueSettings(settings);
     
     if (hasCue(cue.get()))
         return;
 
     addCue(cue);
 }
 
 } // namespace WebCore