Oilpan: Enable oilpan for callback classes

Source/modules/mediastream/RTCStatsRequestImpl.h

Index: Source/modules/mediastream/RTCStatsRequestImpl.h
diff --git a/Source/modules/mediastream/RTCStatsRequestImpl.h b/Source/modules/mediastream/RTCStatsRequestImpl.h
index 4b5e58c71d2c3c6f892de951950540962369ebd6..b0215c6e9bd64c3cc95e2a6495470db8157e6991 100644
--- a/Source/modules/mediastream/RTCStatsRequestImpl.h
+++ b/Source/modules/mediastream/RTCStatsRequestImpl.h
@@ -40,7 +40,7 @@ class RTCStatsCallback;
 
 class RTCStatsRequestImpl FINAL : public RTCStatsRequest, public ActiveDOMObject {
 public:
-    static RTCStatsRequestImpl* create(ExecutionContext*, RTCPeerConnection*, PassOwnPtrWillBeRawPtr<RTCStatsCallback>, MediaStreamTrack*);
+    static RTCStatsRequestImpl* create(ExecutionContext*, RTCPeerConnection*, RTCStatsCallback*, MediaStreamTrack*);
     virtual ~RTCStatsRequestImpl();
 
     virtual RTCStatsResponseBase* createResponse() OVERRIDE;
@@ -55,11 +55,11 @@ public:
     virtual void trace(Visitor*) OVERRIDE;
 
 private:
-    RTCStatsRequestImpl(ExecutionContext*, RTCPeerConnection*, PassOwnPtrWillBeRawPtr<RTCStatsCallback>, MediaStreamTrack*);
+    RTCStatsRequestImpl(ExecutionContext*, RTCPeerConnection*, RTCStatsCallback*, MediaStreamTrack*);
 
     void clear();
 
-    OwnPtrWillBeMember<RTCStatsCallback> m_successCallback;
+    Member<RTCStatsCallback> m_successCallback;
     RefPtr<MediaStreamComponent> m_component;
     Member<RTCPeerConnection> m_requester;
 };