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

Source/web/WebNode.cpp

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 166 matching lines @@
     EventListenerWrapper* listenerWrapper = listener->createEventListenerWrapper(eventType, useCapture, m_private.get());
     // The listenerWrapper is only referenced by the actual Node.  Once it goes
     // away, the wrapper notifies the WebEventListener so it can clear its
     // pointer to it.
     m_private->addEventListener(eventType, adoptRef(listenerWrapper), useCapture);
 }
 
 bool WebNode::dispatchEvent(const WebDOMEvent& event)
 {
     if (!event.isNull())
-        return m_private->dispatchEvent(event);
+        return m_private->dispatchEvent(event.getValue());
     return false;
 }
 
 void WebNode::simulateClick()
 {
     m_private->dispatchSimulatedClick(0);
 }
 
 WebElementCollection WebNode::getElementsByTagName(const WebString& tag) const
 {
@@ skipping 69 matching lines @@
     m_private = node;
     return *this;
 }
 
 WebNode::operator PassRefPtr<Node>() const
 {
     return m_private.get();
 }
 
 } // namespace blink