Oilpan: Replace most of RefPtrs for Event objects with oilpan's transition types

Source/modules/mediastream/RTCDataChannel.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 71 matching lines @@
 
     void stop();
 
     // EventTarget
     virtual const AtomicString& interfaceName() const OVERRIDE;
     virtual ExecutionContext* executionContext() const OVERRIDE;
 
 private:
     RTCDataChannel(ExecutionContext*, PassOwnPtr<blink::WebRTCDataChannelHandler>);
 
-    void scheduleDispatchEvent(PassRefPtr<Event>);
+    void scheduleDispatchEvent(PassRefPtrWillBeRawPtr<Event>);
     void scheduledEventTimerFired(Timer<RTCDataChannel>*);
 
     ExecutionContext* m_executionContext;
 
     // blink::WebRTCDataChannelHandlerClient
     virtual void didChangeReadyState(blink::WebRTCDataChannelHandlerClient::ReadyState) OVERRIDE;
     virtual void didReceiveStringData(const blink::WebString&) OVERRIDE;
     virtual void didReceiveRawData(const char*, size_t) OVERRIDE;
     virtual void didDetectError() OVERRIDE;
 
     OwnPtr<blink::WebRTCDataChannelHandler> m_handler;
 
     bool m_stopped;
 
     blink::WebRTCDataChannelHandlerClient::ReadyState m_readyState;
 
     enum BinaryType {
         BinaryTypeBlob,
         BinaryTypeArrayBuffer
     };
     BinaryType m_binaryType;
 
     Timer<RTCDataChannel> m_scheduledEventTimer;
-    Vector<RefPtr<Event> > m_scheduledEvents;
+    WillBePersistentHeapVector<RefPtrWillBeMember<Event> > m_scheduledEvents;
 };
 
 } // namespace WebCore
 
 #endif // RTCDataChannel_h