[Oilpan] Move MediaStream{Source|Component|Descriptor} to Oilpan heap

third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011 Ericsson AB. 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 55 matching lines @@
     String readyState() const;
 
     static void getSources(ExecutionContext*, MediaStreamTrackSourcesCallback*, ExceptionState&);
     void stopTrack(ExceptionState&);
     MediaStreamTrack* clone(ExecutionContext*);
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(mute);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(unmute);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(ended);
 
-    MediaStreamComponent* component();
+    MediaStreamComponent* component() { return m_component; }
     bool ended() const;
 
     void registerMediaStream(MediaStream*);
     void unregisterMediaStream(MediaStream*);
 
     // EventTarget
     const AtomicString& interfaceName() const override;
     ExecutionContext* executionContext() const override;
 
     // ActiveDOMObject
@@ skipping 10 matching lines @@
 
     // MediaStreamSourceObserver
     void sourceChangedState() override;
 
     void propagateTrackEnded();
 
     MediaStreamSource::ReadyState m_readyState;
     HeapHashSet<Member<MediaStream>> m_registeredMediaStreams;
     bool m_isIteratingRegisteredMediaStreams;
     bool m_stopped;
-    RefPtr<MediaStreamComponent> m_component;
+    Member<MediaStreamComponent> m_component;
 };
 
 typedef HeapVector<Member<MediaStreamTrack>> MediaStreamTrackVector;
 
 } // namespace blink
 
 #endif // MediaStreamTrack_h