Remove the deprecated messageevent API

Source/web/WebDOMMessageEvent.cpp

 /*
  * 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 45 matching lines @@
         RefPtrWillBeRawPtr<Document> coreDocument = PassRefPtrWillBeRawPtr<Document>(targetDocument);
         ports = MessagePort::toMessagePortArray(coreDocument.get(), webChannels);
     }
     // Use an empty array for |ports| when it is null because this function
     // is used to implement postMessage().
     if (!ports)
         ports = new MessagePortArray;
     unwrap<MessageEvent>()->initMessageEvent(type, canBubble, cancelable, messageData, origin, lastEventId, window, ports);
 }
 
-void WebDOMMessageEvent::initMessageEvent(const WebString& type, bool canBubble, bool cancelable, const WebSerializedScriptValue& messageData, const WebString& origin, const WebFrame* sourceFrame, const WebString& lastEventId, const WebMessagePortChannelArray& webChannels)
-{
-    WebDocument document;
-    if (sourceFrame && sourceFrame->isWebLocalFrame()) {
-        DOMWindow* window = toCoreFrame(sourceFrame)->domWindow();
-        document = toLocalDOMWindow(window)->document();
-    }
-    initMessageEvent(type, canBubble, cancelable, messageData, origin, sourceFrame, document, lastEventId, webChannels);
-}
-
 WebSerializedScriptValue WebDOMMessageEvent::data() const
 {
     return WebSerializedScriptValue(constUnwrap<MessageEvent>()->dataAsSerializedScriptValue());
 }
 
 WebString WebDOMMessageEvent::origin() const
 {
     return WebString(constUnwrap<MessageEvent>()->origin());
 }
 
 WebMessagePortChannelArray WebDOMMessageEvent::releaseChannels()
 {
     MessagePortChannelArray* channels = constUnwrap<MessageEvent>()->channels();
     WebMessagePortChannelArray webChannels(channels ? channels->size() : 0);
     if (channels) {
         for (size_t i = 0; i < channels->size(); ++i)
             webChannels[i] = (*channels)[i].leakPtr();
     }
     return webChannels;
 }
 
 } // namespace blink