Enumerate the return value of dispatchEvent so it is clear.

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

 /*
  * 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, 2004, 2005, 2006, 2007, 2008 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef KeyboardEvent_h
 #define KeyboardEvent_h
 
 #include "core/CoreExport.h"
-#include "core/events/EventDispatchMediator.h"
 #include "core/events/KeyboardEventInit.h"
 #include "core/events/UIEventWithKeyState.h"
 
 namespace blink {
 
 class EventDispatcher;
 class PlatformKeyboardEvent;
 
 class CORE_EXPORT KeyboardEvent final : public UIEventWithKeyState {
     DEFINE_WRAPPERTYPEINFO();
@@ skipping 40 matching lines @@
     const PlatformKeyboardEvent* keyEvent() const { return m_keyEvent.get(); }
 
     int keyCode() const; // key code for keydown and keyup, character for keypress
     int charCode() const; // character code for keypress, 0 for keydown and keyup
     bool repeat() const { return modifiers() & PlatformEvent::IsAutoRepeat; }
 
     const AtomicString& interfaceName() const override;
     bool isKeyboardEvent() const override;
     int which() const override;
 
-    PassRefPtrWillBeRawPtr<EventDispatchMediator> createMediator() override;
-
     DECLARE_VIRTUAL_TRACE();
 
 private:
     KeyboardEvent();
     KeyboardEvent(const PlatformKeyboardEvent&, AbstractView*);
     KeyboardEvent(const AtomicString&, const KeyboardEventInit&);
     KeyboardEvent(const AtomicString& type, bool canBubble, bool cancelable, AbstractView*,
         const String& keyIdentifier, const String& code, const String& key, unsigned location,
         PlatformEvent::Modifiers, double platformTimeStamp);
 
     void initLocationModifiers(unsigned location);
 
     OwnPtr<PlatformKeyboardEvent> m_keyEvent;
     String m_keyIdentifier;
     String m_code;
     String m_key;
     unsigned m_location;
 };
 
-class KeyboardEventDispatchMediator : public EventDispatchMediator {
-public:
-    static PassRefPtrWillBeRawPtr<KeyboardEventDispatchMediator> create(PassRefPtrWillBeRawPtr<KeyboardEvent>);
-private:
-    explicit KeyboardEventDispatchMediator(PassRefPtrWillBeRawPtr<KeyboardEvent>);
-    bool dispatchEvent(EventDispatcher&) const override;
-};
-
 DEFINE_EVENT_TYPE_CASTS(KeyboardEvent);
 
 } // namespace blink
 
 #endif // KeyboardEvent_h