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

Source/core/page/EventSource.h

 /*
  * Copyright (C) 2009, 2012 Ericsson AB. All rights reserved.
  * Copyright (C) 2010 Apple 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.
@@ skipping 35 matching lines @@
 
 class Dictionary;
 class ExceptionState;
 class MessageEvent;
 class ResourceResponse;
 class TextResourceDecoder;
 class ThreadableLoader;
 
 class EventSource FINAL : public RefCountedWillBeRefCountedGarbageCollected<EventSource>, public ScriptWrappable, public EventTargetWithInlineData, private ThreadableLoaderClient, public ActiveDOMObject {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
-    DEFINE_EVENT_TARGET_REFCOUNTING(RefCountedWillBeRefCountedGarbageCollected<EventSource>);
+    REFCOUNTED_EVENT_TARGET(EventSource);
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(EventSource);
 public:
     static PassRefPtrWillBeRawPtr<EventSource> create(ExecutionContext*, const String& url, const Dictionary&, ExceptionState&);
     virtual ~EventSource();
 
     static const unsigned long long defaultReconnectDelay;
 
     String url() const;
     bool withCredentials() const;
 
     typedef short State;
@@ skipping 13 matching lines @@
     virtual ExecutionContext* executionContext() const OVERRIDE;
 
     // ActiveDOMObject
     //
     // Note: suspend() is noop since ScopedPageLoadDeferrer calls
     // Page::setDefersLoading() and it defers delivery of events from the
     // loader, and therefore the methods of this class for receiving
     // asynchronous events from the loader won't be invoked.
     virtual void stop() OVERRIDE;
 
-    void trace(Visitor*) { }
-
 private:
     EventSource(ExecutionContext*, const KURL&, const Dictionary&);
 
     virtual void didReceiveResponse(unsigned long, const ResourceResponse&) OVERRIDE;
     virtual void didReceiveData(const char*, int) OVERRIDE;
     virtual void didFinishLoading(unsigned long, double) OVERRIDE;
     virtual void didFail(const ResourceError&) OVERRIDE;
     virtual void didFailAccessControlCheck(const ResourceError&) OVERRIDE;
     virtual void didFailRedirectCheck() OVERRIDE;
 
@@ skipping 22 matching lines @@
     Vector<UChar> m_data;
     AtomicString m_currentlyParsedEventId;
     AtomicString m_lastEventId;
     unsigned long long m_reconnectDelay;
     String m_eventStreamOrigin;
 };
 
 } // namespace WebCore
 
 #endif // EventSource_h