Oilpan: Allocate all EventTarget derived types on the manged heap.

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 27 matching lines @@
 class WebRTCPeerConnectionHandler;
 struct WebRTCDataChannelInit;
 }
 
 namespace WebCore {
 
 class Blob;
 class ExceptionState;
 
 class RTCDataChannel FINAL : public RefCountedWillBeRefCountedGarbageCollected<RTCDataChannel>, public ScriptWrappable, public EventTargetWithInlineData, public blink::WebRTCDataChannelHandlerClient {
-    DEFINE_EVENT_TARGET_REFCOUNTING(RefCountedWillBeRefCountedGarbageCollected<RTCDataChannel>);
+    REFCOUNTED_EVENT_TARGET(RTCDataChannel);
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(RTCDataChannel);
 public:
     static PassRefPtrWillBeRawPtr<RTCDataChannel> create(ExecutionContext*, PassOwnPtr<blink::WebRTCDataChannelHandler>);
     static PassRefPtrWillBeRawPtr<RTCDataChannel> create(ExecutionContext*, blink::WebRTCPeerConnectionHandler*, const String& label, const blink::WebRTCDataChannelInit&, ExceptionState&);
     virtual ~RTCDataChannel();
 
     String label() const;
 
     // DEPRECATED
     bool reliable() const;
 
@@ skipping 16 matching lines @@
 
     void close();
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(open);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(close);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
 
     void stop();
 
-    void trace(Visitor*);
-
     // EventTarget
     virtual const AtomicString& interfaceName() const OVERRIDE;
     virtual ExecutionContext* executionContext() const OVERRIDE;
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 private:
     RTCDataChannel(ExecutionContext*, PassOwnPtr<blink::WebRTCDataChannelHandler>);
 
     void scheduleDispatchEvent(PassRefPtrWillBeRawPtr<Event>);
     void scheduledEventTimerFired(Timer<RTCDataChannel>*);
 
     ExecutionContext* m_executionContext;
 
     // blink::WebRTCDataChannelHandlerClient
     virtual void didChangeReadyState(blink::WebRTCDataChannelHandlerClient::ReadyState) OVERRIDE;
@@ skipping 13 matching lines @@
     };
     BinaryType m_binaryType;
 
     Timer<RTCDataChannel> m_scheduledEventTimer;
     WillBeHeapVector<RefPtrWillBeMember<Event> > m_scheduledEvents;
 };
 
 } // namespace WebCore
 
 #endif // RTCDataChannel_h