Add a requestFullscreen variant with a default (prefixed) type

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

 /*
  * 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 512 matching lines @@
 void MediaControls::showOverlayCastButtonIfNeeded() {
   if (mediaElement().shouldShowControls() ||
       !shouldShowCastButton(mediaElement()))
     return;
 
   m_overlayCastButton->tryShowOverlay();
   resetHideMediaControlsTimer();
 }
 
 void MediaControls::enterFullscreen() {
-  // TODO(foolip): switch to Fullscreen::UnprefixedRequest when the unprefixed
-  // Fullscreen API has launched.
-  Fullscreen::requestFullscreen(mediaElement(), Fullscreen::PrefixedRequest);
+  Fullscreen::requestFullscreen(mediaElement());
 }
 
 void MediaControls::exitFullscreen() {
   Fullscreen::exitFullscreen(document());
 }
 
 void MediaControls::enteredFullscreen() {
   m_fullscreenButton->setIsFullscreen(true);
   stopHideMediaControlsTimer();
   startHideMediaControlsTimer();
@@ skipping 377 matching lines @@
   visitor->trace(m_overflowMenu);
   visitor->trace(m_overflowList);
   visitor->trace(m_castButton);
   visitor->trace(m_overlayCastButton);
   visitor->trace(m_mediaEventListener);
   visitor->trace(m_windowEventListener);
   HTMLDivElement::trace(visitor);
 }
 
 }  // namespace blink