Support subtitles for native fullscreen video

Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 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 3504 matching lines @@
 void HTMLMediaElement::exitFullscreen()
 {
     LOG(Media, "HTMLMediaElement::exitFullscreen");
 
     if (document()->settings() && document()->settings()->fullScreenEnabled() && isFullscreen())
         FullscreenElementStack::from(document())->webkitCancelFullScreen();
 }
 
 void HTMLMediaElement::didBecomeFullscreenElement()
 {
+    Element::didBecomeFullscreenElement();
     if (hasMediaControls())
         mediaControls()->enteredFullscreen();
 }
 
 void HTMLMediaElement::willStopBeingFullscreenElement()
 {
     if (hasMediaControls())
         mediaControls()->exitedFullscreen();
+    Element::willStopBeingFullscreenElement();
 }
 
 WebKit::WebLayer* HTMLMediaElement::platformLayer() const
 {
     return m_player ? m_player->platformLayer() : 0;
 }
 
 bool HTMLMediaElement::hasClosedCaptions() const
 {
     if (RuntimeEnabledFeatures::videoTrackEnabled() && m_textTracks) {
@@ skipping 407 matching lines @@
 {
     m_restrictions = NoRestrictions;
 }
 
 void HTMLMediaElement::mediaPlayerScheduleLayerUpdate()
 {
     scheduleLayerUpdate();
 }
 
 }