Virtualize EventDispatchMediator creation and cleanup calling.

Source/core/events/PointerEvent.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/events/PointerEvent.h"
 
 #include "core/dom/Element.h"
 #include "core/events/EventDispatcher.h"
 
@@ skipping 41 matching lines @@
 bool PointerEvent::isMouseEvent() const
 {
     return false;
 }
 
 bool PointerEvent::isPointerEvent() const
 {
     return true;
 }
 
+PassRefPtrWillBeRawPtr<EventDispatchMediator> PointerEvent::createMediator()
+{
+    return PointerEventDispatchMediator::create(this);
+}
+
 DEFINE_TRACE(PointerEvent)
 {
     MouseEvent::trace(visitor);
 }
 
 PassRefPtrWillBeRawPtr<PointerEventDispatchMediator> PointerEventDispatchMediator::create(PassRefPtrWillBeRawPtr<PointerEvent> pointerEvent)
 {
     return adoptRefWillBeNoop(new PointerEventDispatchMediator(pointerEvent));
 }
 
@@ skipping 18 matching lines @@
     ASSERT(!event().target() || event().target() != event().relatedTarget());
 
     EventTarget* relatedTarget = event().relatedTarget();
     event().eventPath().adjustForRelatedTarget(dispatcher.node(), relatedTarget);
 
     dispatcher.dispatch();
     return !event().defaultHandled() && !event().defaultPrevented();
 }
 
 } // namespace blink