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

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

Index: third_party/WebKit/Source/modules/mediastream/MediaStream.h
diff --git a/third_party/WebKit/Source/modules/mediastream/MediaStream.h b/third_party/WebKit/Source/modules/mediastream/MediaStream.h
index 6ee0ef6da7517d29f540d2ab3a0be4fdaa5f2c98..a43cc24e245d8137f210cea8dc582d4f5b94a6b5 100644
--- a/third_party/WebKit/Source/modules/mediastream/MediaStream.h
+++ b/third_party/WebKit/Source/modules/mediastream/MediaStream.h
@@ -50,7 +50,7 @@ public:
     static MediaStream* create(ExecutionContext*);
     static MediaStream* create(ExecutionContext*, MediaStream*);
     static MediaStream* create(ExecutionContext*, const MediaStreamTrackVector&);
-    static MediaStream* create(ExecutionContext*, PassRefPtr<MediaStreamDescriptor>);
+    static MediaStream* create(ExecutionContext*, MediaStreamDescriptor*);
     ~MediaStream() override;
 
     // DEPRECATED
@@ -82,7 +82,7 @@ public:
     // MediaStreamDescriptorClient
     void streamEnded() override;
 
-    MediaStreamDescriptor* descriptor() const { return m_descriptor.get(); }
+    MediaStreamDescriptor* descriptor() const { return m_descriptor; }
 
     // EventTarget
     const AtomicString& interfaceName() const override;
@@ -96,7 +96,7 @@ public:
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    MediaStream(ExecutionContext*, PassRefPtr<MediaStreamDescriptor>);
+    MediaStream(ExecutionContext*, MediaStreamDescriptor*);
     MediaStream(ExecutionContext*, const MediaStreamTrackVector& audioTracks, const MediaStreamTrackVector& videoTracks);
 
     // ContextLifecycleObserver
@@ -115,7 +115,7 @@ private:
 
     MediaStreamTrackVector m_audioTracks;
     MediaStreamTrackVector m_videoTracks;
-    RefPtr<MediaStreamDescriptor> m_descriptor;
+    Member<MediaStreamDescriptor> m_descriptor;
 
     Timer<MediaStream> m_scheduledEventTimer;
     WillBeHeapVector<RefPtrWillBeMember<Event>> m_scheduledEvents;