Add Event::create() that takes EventInitDictionary

Source/core/events/Event.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.
@@ skipping 89 matching lines @@
     }
     static PassRefPtrWillBeRawPtr<Event> createBubble(const AtomicString& type)
     {
         return adoptRefWillBeNoop(new Event(type, true, false));
     }
     static PassRefPtrWillBeRawPtr<Event> createCancelableBubble(const AtomicString& type)
     {
         return adoptRefWillBeNoop(new Event(type, true, true));
     }
 
+    // TODO(bashi): Remove this when we remove all [EventConstructor].
     static PassRefPtrWillBeRawPtr<Event> create(const AtomicString& type, const EventInit& initializer)
     {
         return adoptRefWillBeNoop(new Event(type, initializer));
     }
+    static PassRefPtrWillBeRawPtr<Event> create(const AtomicString& type, const EventInitDictionary& initializer)
+    {
+        return adoptRefWillBeNoop(new Event(type, initializer));
+    }
 
     virtual ~Event();
 
     void initEvent(const AtomicString& type, bool canBubble, bool cancelable);
 
     const AtomicString& type() const { return m_type; }
     void setType(const AtomicString& type) { m_type = type; }
 
     EventTarget* target() const { return m_target.get(); }
     void setTarget(PassRefPtrWillBeRawPtr<EventTarget>);
@@ skipping 102 matching lines @@
     OwnPtrWillBeMember<EventPath> m_eventPath;
     double m_uiCreateTime; // For input events, the time the event was recorded by the UI.
 };
 
 #define DEFINE_EVENT_TYPE_CASTS(typeName) \
     DEFINE_TYPE_CASTS(typeName, Event, event, event->is##typeName(), event.is##typeName())
 
 } // namespace blink
 
 #endif // Event_h