Oilpan: Prepare to move EventDispatchMediator to Oilpan heap.

Source/core/events/TouchEvent.h

 /*
  * Copyright 2008, The Android Open Source Project
  * Copyright (C) 2012 Research In Motion Limited. 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 copyright
@@ skipping 68 matching lines @@
             PassRefPtrWillBeRawPtr<AbstractView>,
             bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool cancelable);
 
     RefPtrWillBeMember<TouchList> m_touches;
     RefPtrWillBeMember<TouchList> m_targetTouches;
     RefPtrWillBeMember<TouchList> m_changedTouches;
 };
 
 class TouchEventDispatchMediator FINAL : public EventDispatchMediator {
 public:
-    static PassRefPtr<TouchEventDispatchMediator> create(PassRefPtrWillBeRawPtr<TouchEvent>);
+    static PassRefPtrWillBeRawPtr<TouchEventDispatchMediator> create(PassRefPtrWillBeRawPtr<TouchEvent>);
 
 private:
     explicit TouchEventDispatchMediator(PassRefPtrWillBeRawPtr<TouchEvent>);
     TouchEvent* event() const;
     virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
 };
 
 DEFINE_EVENT_TYPE_CASTS(TouchEvent);
 
 } // namespace WebCore
 
 #endif // TouchEvent_h