Move mediastream module to oilpan transition types

Source/modules/mediastream/UserMediaRequest.h

Index: Source/modules/mediastream/UserMediaRequest.h
diff --git a/Source/modules/mediastream/UserMediaRequest.h b/Source/modules/mediastream/UserMediaRequest.h
index bef653dfd857e7dd8cd190f680ff8d7165c1590c..b5bf69f33bc5807fd0ece9f7765afff5242865a3 100644
--- a/Source/modules/mediastream/UserMediaRequest.h
+++ b/Source/modules/mediastream/UserMediaRequest.h
@@ -48,9 +48,9 @@ class ExceptionState;
 class MediaStreamDescriptor;
 class UserMediaController;
 
-class UserMediaRequest FINAL : public RefCounted<UserMediaRequest>, public ContextLifecycleObserver {
+class UserMediaRequest FINAL : public RefCountedWillBeGarbageCollectedFinalized<UserMediaRequest>, public ContextLifecycleObserver {
 public:
-    static PassRefPtr<UserMediaRequest> create(ExecutionContext*, UserMediaController*, const Dictionary& options, PassOwnPtr<NavigatorUserMediaSuccessCallback>, PassOwnPtr<NavigatorUserMediaErrorCallback>, ExceptionState&);
+    static PassRefPtrWillBeRawPtr<UserMediaRequest> create(ExecutionContext*, UserMediaController*, const Dictionary& options, PassOwnPtr<NavigatorUserMediaSuccessCallback>, PassOwnPtr<NavigatorUserMediaErrorCallback>, ExceptionState&);
     virtual ~UserMediaRequest();
 
     NavigatorUserMediaSuccessCallback* successCallback() const { return m_successCallback.get(); }
@@ -72,6 +72,8 @@ public:
     // ContextLifecycleObserver
     virtual void contextDestroyed() OVERRIDE;
 
+    void trace(Visitor*) { }
+
 private:
     UserMediaRequest(ExecutionContext*, UserMediaController*, blink::WebMediaConstraints audio, blink::WebMediaConstraints video, PassOwnPtr<NavigatorUserMediaSuccessCallback>, PassOwnPtr<NavigatorUserMediaErrorCallback>);