Oilpan: make MediaError + TrackEvent heap savvier.

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 85 matching lines @@
     enum DelayedActionType {
         LoadMediaResource = 1 << 0,
         LoadTextTrackResource = 1 << 1,
         TextTrackChangesNotification = 1 << 2
     };
     void scheduleDelayedAction(DelayedActionType);
 
     bool isActive() const { return m_active; }
 
     // error state
-    PassRefPtr<MediaError> error() const;
+    PassRefPtrWillBeRawPtr<MediaError> error() const;
 
     // network state
     void setSrc(const AtomicString&);
     const KURL& currentSrc() const { return m_currentSrc; }
 
     enum NetworkState { NETWORK_EMPTY, NETWORK_IDLE, NETWORK_LOADING, NETWORK_NO_SOURCE };
     NetworkState networkState() const;
 
     String preload() const;
     void setPreload(const AtomicString&);
@@ skipping 241 matching lines @@
     void setPlayerPreload();
     void startDelayedLoad();
     blink::WebMediaPlayer::LoadType loadType() const;
     void scheduleNextSourceChild();
     void loadNextSourceChild();
     void userCancelledLoad();
     void clearMediaPlayer(int flags);
     void clearMediaPlayerAndAudioSourceProviderClient();
     bool havePotentialSourceChild();
     void noneSupported();
-    void mediaEngineError(PassRefPtr<MediaError> err);
+    void mediaEngineError(PassRefPtrWillBeRawPtr<MediaError>);
     void cancelPendingEventsAndCallbacks();
     void waitForSourceChange();
     void prepareToPlay();
 
     KURL selectNextSourceChild(ContentType*, String* keySystem, InvalidURLAction);
 
     void mediaLoadingFailed(MediaPlayer::NetworkState);
 
     void updateActiveTextTrackCues(double);
     HTMLTrackElement* showingTrackWithSameKind(HTMLTrackElement*) const;
@@ skipping 46 matching lines @@
     RefPtr<TimeRanges> m_playedTimeRanges;
     OwnPtr<GenericEventQueue> m_asyncEventQueue;
 
     double m_playbackRate;
     double m_defaultPlaybackRate;
     NetworkState m_networkState;
     ReadyState m_readyState;
     ReadyState m_readyStateMaximum;
     KURL m_currentSrc;
 
-    RefPtr<MediaError> m_error;
+    RefPtrWillBeMember<MediaError> m_error;
 
     double m_volume;
     double m_lastSeekTime;
 
     double m_previousProgressTime;
 
     // Cached duration to suppress duplicate events if duration unchanged.
     double m_duration;
 
     // The last time a timeupdate event was sent (wall clock).
@@ skipping 106 matching lines @@
 inline bool isHTMLMediaElement(const HTMLElement& element)
 {
     return isHTMLAudioElement(element) || isHTMLVideoElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } //namespace
 
 #endif