Reland "Sync requestFullscreen() and exitFullscreen() algorithms with the spec"

third_party/WebKit/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
@@ skipping 3433 matching lines @@
     return true;
 
   // Wait for any pending events to be fired.
   if (async_event_queue_->HasPendingEvents())
     return true;
 
   return false;
 }
 
 bool HTMLMediaElement::IsFullscreen() const {
-  return Fullscreen::IsCurrentFullScreenElement(*this);
+  return Fullscreen::IsFullscreenElement(*this);
 }
 
 void HTMLMediaElement::DidEnterFullscreen() {
   UpdateControlsVisibility();
 
   // FIXME: There is no embedder-side handling in layout test mode.
   if (GetWebMediaPlayer() && !LayoutTestSupport::IsRunningLayoutTest())
     GetWebMediaPlayer()->EnteredFullscreen();
   // Cache this in case the player is destroyed before leaving fullscreen.
   in_overlay_fullscreen_video_ = UsesOverlayFullscreenVideo();
@@ skipping 610 matching lines @@
       kMostlyFillViewportBecomeStableSeconds, BLINK_FROM_HERE);
 }
 
 void HTMLMediaElement::ViewportFillDebouncerTimerFired(TimerBase*) {
   mostly_filling_viewport_ = true;
   if (web_media_player_)
     web_media_player_->BecameDominantVisibleContent(mostly_filling_viewport_);
 }
 
 }  // namespace blink