Move mediastream module to oilpan transition types

Source/modules/mediastream/RTCDataChannelEvent.h

Index: Source/modules/mediastream/RTCDataChannelEvent.h
diff --git a/Source/modules/mediastream/RTCDataChannelEvent.h b/Source/modules/mediastream/RTCDataChannelEvent.h
index ce5fe3c81aa9777bc38bd8ed08b051b3e87f1fea..efb1e38ec6df588076ddae7f15fb1a766a37f941 100644
--- a/Source/modules/mediastream/RTCDataChannelEvent.h
+++ b/Source/modules/mediastream/RTCDataChannelEvent.h
@@ -36,7 +36,7 @@ public:
     virtual ~RTCDataChannelEvent();
 
     static PassRefPtr<RTCDataChannelEvent> create();
-    static PassRefPtr<RTCDataChannelEvent> create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<RTCDataChannel>);
+    static PassRefPtr<RTCDataChannelEvent> create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<RTCDataChannel>);
 
     RTCDataChannel* channel() const;
 
@@ -44,7 +44,7 @@ public:
 
 private:
     RTCDataChannelEvent();
-    RTCDataChannelEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<RTCDataChannel>);
+    RTCDataChannelEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<RTCDataChannel>);
 
     RefPtr<RTCDataChannel> m_channel;
 };