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

Source/core/events/EventDispatchMediator.h

 /*
  * Copyright (C) 2011 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef EventDispatchMediator_h
 #define EventDispatchMediator_h
 
+#include "heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 class Event;
 class EventDispatcher;
 class Node;
 
 class EventDispatchMediator : public RefCounted<EventDispatchMediator> {
 public:
-    static PassRefPtr<EventDispatchMediator> create(PassRefPtr<Event>);
+    static PassRefPtr<EventDispatchMediator> create(PassRefPtrWillBeRawPtr<Event>);
     virtual ~EventDispatchMediator() { };
     virtual bool dispatchEvent(EventDispatcher*) const;
     Event* event() const { return m_event.get(); };
 
 protected:
-    explicit EventDispatchMediator(PassRefPtr<Event>);
+    explicit EventDispatchMediator(PassRefPtrWillBeRawPtr<Event>);
     EventDispatchMediator() { };
-    void setEvent(PassRefPtr<Event> event) { m_event = event; };
+    void setEvent(PassRefPtrWillBeRawPtr<Event> event) { m_event = event; };
 
 private:
-    RefPtr<Event> m_event;
+    RefPtrWillBePersistent<Event> m_event;
 };
 
 } // namespace WebCore
 
 #endif // EventDispatchMediator_h