Virtualize EventDispatchMediator creation and cleanup calling.

Source/core/events/FocusEvent.h

 /*
  * Copyright (C) 2013 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 38 matching lines @@
     {
         return adoptRefWillBeNoop(new FocusEvent(type, initializer));
     }
 
     EventTarget* relatedTarget() const { return m_relatedTarget.get(); }
     void setRelatedTarget(EventTarget* relatedTarget) { m_relatedTarget = relatedTarget; }
 
     const AtomicString& interfaceName() const override;
     bool isFocusEvent() const override;
 
+    PassRefPtrWillBeRawPtr<EventDispatchMediator> createMediator() override;
+
     DECLARE_VIRTUAL_TRACE();
 
 private:
     FocusEvent();
     FocusEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView>, int, EventTarget*);
     FocusEvent(const AtomicString& type, const FocusEventInit&);
 
     RefPtrWillBeMember<EventTarget> m_relatedTarget;
 };
 
 DEFINE_EVENT_TYPE_CASTS(FocusEvent);
 
 class FocusEventDispatchMediator final : public EventDispatchMediator {
 public:
     static PassRefPtrWillBeRawPtr<FocusEventDispatchMediator> create(PassRefPtrWillBeRawPtr<FocusEvent>);
 private:
     explicit FocusEventDispatchMediator(PassRefPtrWillBeRawPtr<FocusEvent>);
     FocusEvent& event() const { return static_cast<FocusEvent&>(EventDispatchMediator::event()); }
     bool dispatchEvent(EventDispatcher&) const override;
 };
 
-class BlurEventDispatchMediator final : public EventDispatchMediator {
-public:
-    static PassRefPtrWillBeRawPtr<BlurEventDispatchMediator> create(PassRefPtrWillBeRawPtr<FocusEvent>);
-private:
-    explicit BlurEventDispatchMediator(PassRefPtrWillBeRawPtr<FocusEvent>);
-    FocusEvent& event() const { return static_cast<FocusEvent&>(EventDispatchMediator::event()); }
-    bool dispatchEvent(EventDispatcher&) const override;
-};
-
-class FocusInEventDispatchMediator final : public EventDispatchMediator {
-public:
-    static PassRefPtrWillBeRawPtr<FocusInEventDispatchMediator> create(PassRefPtrWillBeRawPtr<FocusEvent>);
-private:
-    explicit FocusInEventDispatchMediator(PassRefPtrWillBeRawPtr<FocusEvent>);
-    FocusEvent& event() const { return static_cast<FocusEvent&>(EventDispatchMediator::event()); }
-    bool dispatchEvent(EventDispatcher&) const override;
-};
-
-class FocusOutEventDispatchMediator final : public EventDispatchMediator {
-public:
-    static PassRefPtrWillBeRawPtr<FocusOutEventDispatchMediator> create(PassRefPtrWillBeRawPtr<FocusEvent>);
-private:
-    explicit FocusOutEventDispatchMediator(PassRefPtrWillBeRawPtr<FocusEvent>);
-    FocusEvent& event() const { return static_cast<FocusEvent&>(EventDispatchMediator::event()); }
-    bool dispatchEvent(EventDispatcher&) const override;
-};
-
 } // namespace blink
 
 #endif // FocusEvent_h