Move mediastream module to oilpan transition types

Source/modules/mediastream/MediaDevicesRequest.h

Index: Source/modules/mediastream/MediaDevicesRequest.h
diff --git a/Source/modules/mediastream/MediaDevicesRequest.h b/Source/modules/mediastream/MediaDevicesRequest.h
index f99842d6a1f2f633464d10828fffee8e71c45888..e75632aa031597c7759b06a0445d7c0548dcdb15 100644
--- a/Source/modules/mediastream/MediaDevicesRequest.h
+++ b/Source/modules/mediastream/MediaDevicesRequest.h
@@ -29,6 +29,7 @@
 #include "core/dom/ActiveDOMObject.h"
 #include "modules/mediastream/MediaDeviceInfo.h"
 #include "modules/mediastream/MediaDeviceInfoCallback.h"
+#include "platform/heap/Handle.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
@@ -40,9 +41,9 @@ class ExceptionState;
 class MediaStreamDescriptor;
 class UserMediaController;
 
-class MediaDevicesRequest FINAL : public RefCounted<MediaDevicesRequest>, public ActiveDOMObject {
+class MediaDevicesRequest FINAL : public RefCountedWillBeRefCountedGarbageCollected<MediaDevicesRequest>, public ActiveDOMObject {
 public:
-    static PassRefPtr<MediaDevicesRequest> create(ExecutionContext*, UserMediaController*, PassOwnPtr<MediaDeviceInfoCallback>, ExceptionState&);
+    static PassRefPtrWillBeRawPtr<MediaDevicesRequest> create(ExecutionContext*, UserMediaController*, PassOwnPtr<MediaDeviceInfoCallback>, ExceptionState&);
     virtual ~MediaDevicesRequest();
 
     MediaDeviceInfoCallback* callback() const { return m_callback.get(); }
@@ -55,6 +56,8 @@ public:
     // ActiveDOMObject
     virtual void stop() OVERRIDE;
 
+    void trace(Visitor*) { }
+
 private:
     MediaDevicesRequest(ExecutionContext*, UserMediaController*, PassOwnPtr<MediaDeviceInfoCallback>);