Oilpan: Prepare to move EventQueue and its subclasses to Oilpan heap.

Source/core/html/HTMLMediaElement.h

 /*
  * 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 409 matching lines @@
     bool isBlocked() const;
     bool isBlockedOnMediaController() const;
     bool isAutoplaying() const { return m_autoplaying; }
 
     blink::WebMediaPlayer::CORSMode corsMode() const;
 
     Timer<HTMLMediaElement> m_loadTimer;
     Timer<HTMLMediaElement> m_progressEventTimer;
     Timer<HTMLMediaElement> m_playbackProgressTimer;
     RefPtr<TimeRanges> m_playedTimeRanges;
-    OwnPtr<GenericEventQueue> m_asyncEventQueue;
+    OwnPtrWillBeMember<GenericEventQueue> m_asyncEventQueue;
 
     double m_playbackRate;
     double m_defaultPlaybackRate;
     NetworkState m_networkState;
     ReadyState m_readyState;
     ReadyState m_readyStateMaximum;
     KURL m_currentSrc;
 
     RefPtrWillBeMember<MediaError> m_error;
 
@@ skipping 118 matching lines @@
 inline bool isHTMLMediaElement(const HTMLElement& element)
 {
     return isHTMLAudioElement(element) || isHTMLVideoElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } //namespace
 
 #endif