Oilpan: have MediaController weakly refer to its media elements.

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 248 matching lines @@
     AudioSourceProviderClient* audioSourceNode() { return m_audioSourceNode; }
     void setAudioSourceNode(AudioSourceProviderClient*);
 
     AudioSourceProvider* audioSourceProvider();
 #endif
 
     enum InvalidURLAction { DoNothing, Complain };
     bool isSafeToLoadURL(const KURL&, InvalidURLAction);
 
     MediaController* controller() const;
-    void setController(PassRefPtr<MediaController>); // Resets the MediaGroup and sets the MediaController.
+    void setController(PassRefPtrWillBeRawPtr<MediaController>); // Resets the MediaGroup and sets the MediaController.
 
     void scheduleEvent(PassRefPtrWillBeRawPtr<Event>);
 
     // Current volume that should be used by the webMediaPlayer(). This method takes muted state
     // and m_mediaController multipliers into account.
     double playerVolume() const;
 
 #if ENABLE(OILPAN)
     bool isFinalizing() const { return m_isFinalizing; }
 #endif
 
 protected:
     HTMLMediaElement(const QualifiedName&, Document&);
     virtual ~HTMLMediaElement();
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual void finishParsingChildren() OVERRIDE FINAL;
     virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
     virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
 
     virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE;
 
     enum DisplayMode { Unknown, Poster, PosterWaitingForVideo, Video };
     DisplayMode displayMode() const { return m_displayMode; }
     virtual void setDisplayMode(DisplayMode mode) { m_displayMode = mode; }
 
-    void setControllerInternal(PassRefPtr<MediaController>);
+    void setControllerInternal(PassRefPtrWillBeRawPtr<MediaController>);
 
     bool ignoreTrackDisplayUpdateRequests() const { return m_ignoreTrackDisplayUpdate > 0; }
     void beginIgnoringTrackDisplayUpdateRequests();
     void endIgnoringTrackDisplayUpdateRequests();
 
 private:
     void createMediaPlayer();
 
     virtual bool alwaysCreateUserAgentShadowRoot() const OVERRIDE FINAL { return true; }
     virtual bool areAuthorShadowsAllowed() const OVERRIDE FINAL { return false; }
@@ skipping 210 matching lines @@
 
     CueList m_currentlyActiveCues;
     int m_ignoreTrackDisplayUpdate;
 
 #if ENABLE(WEB_AUDIO)
     // This is a weak reference, since m_audioSourceNode holds a reference to us.
     AudioSourceProviderClient* m_audioSourceNode;
 #endif
 
     friend class MediaController;
-    RefPtr<MediaController> m_mediaController;
+    RefPtrWillBeMember<MediaController> m_mediaController;
 
     friend class Internals;
     friend class TrackDisplayUpdateScope;
 
     static URLRegistry* s_mediaStreamRegistry;
 };
 
 #ifndef NDEBUG
 // Template specializations required by PodIntervalTree in debug mode.
 template <>
@@ skipping 21 matching lines @@
 inline bool isHTMLMediaElement(const HTMLElement& element)
 {
     return isHTMLAudioElement(element) || isHTMLVideoElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } //namespace
 
 #endif