Support text track selection in video controls

third_party/WebKit/Source/core/html/shadow/MediaControls.h

 /*
  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011, 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 41 matching lines @@
 
     void beginScrubbing();
     void endScrubbing();
 
     void updateCurrentTimeDisplay();
 
     void updateVolume();
 
     void changedClosedCaptionsVisibility();
     void refreshClosedCaptionsButtonVisibility();
+    void toggleTextTrackList();
 
     void enteredFullscreen();
     void exitedFullscreen();
 
     void startedCasting();
     void stoppedCasting();
     void refreshCastButtonVisibility();
     void showOverlayCastButtonIfNeeded();
     // Update cast button visibility, but don't try to update our panel
     // button visibility for space.
@@ skipping 62 matching lines @@
     Member<MediaControlCastButtonElement> m_overlayCastButton;
     Member<MediaControlPanelEnclosureElement> m_enclosure;
     Member<MediaControlPanelElement> m_panel;
     Member<MediaControlPlayButtonElement> m_playButton;
     Member<MediaControlTimelineElement> m_timeline;
     Member<MediaControlCurrentTimeDisplayElement> m_currentTimeDisplay;
     Member<MediaControlTimeRemainingDisplayElement> m_durationDisplay;
     Member<MediaControlMuteButtonElement> m_muteButton;
     Member<MediaControlVolumeSliderElement> m_volumeSlider;
     Member<MediaControlToggleClosedCaptionsButtonElement> m_toggleClosedCaptionsButton;
+    Member<MediaControlTextTrackListElement> m_textTrackList;
     Member<MediaControlCastButtonElement> m_castButton;
     Member<MediaControlFullscreenButtonElement> m_fullScreenButton;
 
     Timer<MediaControls> m_hideMediaControlsTimer;
     unsigned m_hideTimerBehaviorFlags;
     bool m_isMouseOverControls : 1;
     bool m_isPausedForScrubbing : 1;
 
     Timer<MediaControls> m_panelWidthChangedTimer;
     int m_panelWidth;
 
     bool m_allowHiddenVolumeControls : 1;
 };
 
 DEFINE_ELEMENT_TYPE_CASTS(MediaControls, isMediaControls());
 
 } // namespace blink
 
 #endif