Enumerate the return value of dispatchEvent so it is clear.

third_party/WebKit/Source/core/events/KeyboardEvent.cpp

 /**
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 175 matching lines @@
         break;
     case KeyboardEvent::DOM_KEY_LOCATION_LEFT:
         m_modifiers |= PlatformEvent::IsLeft;
         break;
     case KeyboardEvent::DOM_KEY_LOCATION_RIGHT:
         m_modifiers |= PlatformEvent::IsRight;
         break;
     }
 }
 
-PassRefPtrWillBeRawPtr<EventDispatchMediator> KeyboardEvent::createMediator()
-{
-    return KeyboardEventDispatchMediator::create(this);
-}
-
 DEFINE_TRACE(KeyboardEvent)
 {
     UIEventWithKeyState::trace(visitor);
 }
 
-PassRefPtrWillBeRawPtr<KeyboardEventDispatchMediator> KeyboardEventDispatchMediator::create(PassRefPtrWillBeRawPtr<KeyboardEvent> event)
-{
-    return adoptRefWillBeNoop(new KeyboardEventDispatchMediator(event));
-}
-
-KeyboardEventDispatchMediator::KeyboardEventDispatchMediator(PassRefPtrWillBeRawPtr<KeyboardEvent> event)
-    : EventDispatchMediator(event)
-{
-}
-
-bool KeyboardEventDispatchMediator::dispatchEvent(EventDispatcher& dispatcher) const
-{
-    // Make sure not to return true if we already took default action while handling the event.
-    return EventDispatchMediator::dispatchEvent(dispatcher) && !event().defaultHandled();
-}
-
 } // namespace blink