Remove the deprecated messageevent API

public/web/WebDOMMessageEvent.h

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 #if BLINK_IMPLEMENTATION
 #include "core/events/Event.h"
 #include "core/events/MessageEvent.h"
 #endif
 
 namespace blink {
 
 class WebFrame;
 class WebString;
 
+// An interface for posting message events to the target frame. The message
+// events are used for communication between documents and described here:
+// http://www.w3.org/TR/2012/WD-webmessaging-20120313/#terminology
 class WebDOMMessageEvent : public WebDOMEvent {
 public:
     WebDOMMessageEvent() { }
     BLINK_EXPORT void initMessageEvent(const WebString& type, bool canBubble, bool cancelable, const WebSerializedScriptValue& messageData, const WebString& origin, const WebFrame* sourceFrame, const WebDocument& targetDocument, const WebString& lastEventId, const WebMessagePortChannelArray& channels = WebMessagePortChannelArray());
-    // DEPRECATED: Use the initMessageEvent method above. This method will be removed.
-    BLINK_EXPORT void initMessageEvent(const WebString& type, bool canBubble, bool cancelable, const WebSerializedScriptValue& messageData, const WebString& origin, const WebFrame* sourceFrame, const WebString& lastEventId, const WebMessagePortChannelArray& channels = WebMessagePortChannelArray());
 
     BLINK_EXPORT WebSerializedScriptValue data() const;
     BLINK_EXPORT WebString origin() const;
 
     BLINK_EXPORT WebMessagePortChannelArray releaseChannels();
 
 #if BLINK_IMPLEMENTATION
     explicit WebDOMMessageEvent(const PassRefPtrWillBeRawPtr<MessageEvent>& e) : WebDOMEvent(e) { }
 #endif
 };
 
 } // namespace blink
 
 #endif