Remove unused code behind USE(PLATFORM_TEXT_TRACK_MENU)

Source/core/platform/graphics/MediaPlayerPrivate.h

 /*
  * Copyright (C) 2009, 2010, 2011, 2012, 2013 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 16 matching lines @@
 #define MediaPlayerPrivate_h
 
 #include "core/html/TimeRanges.h"
 #include "core/platform/graphics/MediaPlayer.h"
 #include <wtf/Forward.h>
 
 namespace WebCore {
 
 class IntRect;
 class IntSize;
-class PlatformTextTrack;
 
 class MediaPlayerPrivateInterface {
     WTF_MAKE_NONCOPYABLE(MediaPlayerPrivateInterface); WTF_MAKE_FAST_ALLOCATED;
 public:
     MediaPlayerPrivateInterface() { }
     virtual ~MediaPlayerPrivateInterface() { }
 
     virtual void load(const String& url) = 0;
     virtual void load(const String& url, PassRefPtr<WebKitMediaSource>) = 0;
     virtual void cancelLoad() = 0;
@@ skipping 104 matching lines @@
 #endif
 
 #if ENABLE(ENCRYPTED_MEDIA)
     virtual MediaPlayer::MediaKeyException addKey(const String&, const unsigned char*, unsigned, const unsigned char*, unsigned, const String&) { return MediaPlayer::KeySystemNotSupported; }
     virtual MediaPlayer::MediaKeyException generateKeyRequest(const String&, const unsigned char*, unsigned) { return MediaPlayer::KeySystemNotSupported; }
     virtual MediaPlayer::MediaKeyException cancelKeyRequest(const String&, const String&) { return MediaPlayer::KeySystemNotSupported; }
 #endif
 
     virtual bool requiresTextTrackRepresentation() const { return false; }
     virtual void setTextTrackRepresentation(TextTrackRepresentation*) { }
-
-#if USE(PLATFORM_TEXT_TRACK_MENU)
-    virtual bool implementsTextTrackControls() const { return false; }
-    virtual PassRefPtr<PlatformTextTrackMenuInterface> textTrackMenu() { return 0; }
-#endif
-
 };
 
 }
 
 #endif