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

Source/web/WebFrameImpl.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 1837 matching lines @@
 
 void WebFrameImpl::sendOrientationChangeEvent(int orientation)
 {
     if (frame())
         frame()->sendOrientationChangeEvent(orientation);
 }
 
 void WebFrameImpl::dispatchMessageEventWithOriginCheck(const WebSecurityOrigin& intendedTargetOrigin, const WebDOMEvent& event)
 {
     ASSERT(!event.isNull());
-    frame()->domWindow()->dispatchMessageEventWithOriginCheck(intendedTargetOrigin.get(), event, nullptr);
+    frame()->domWindow()->dispatchMessageEventWithOriginCheck(intendedTargetOrigin.get(), event.getValue(), nullptr);
 }
 
 int WebFrameImpl::findMatchMarkersVersion() const
 {
     ASSERT(!parent());
     return m_findMatchMarkersVersion;
 }
 
 void WebFrameImpl::clearFindMatchesCache()
 {
@@ skipping 666 matching lines @@
 
         // There is a possibility that the frame being detached was the only
         // pending one. We need to make sure final replies can be sent.
         flushCurrentScopingEffort(m_findRequestIdentifier);
 
         cancelPendingScopingEffort();
     }
 }
 
 } // namespace blink