anchor.diff:    }
   
     /**
  -   * function for receiving messge
  +   * function for receiving message
      */
     void _onNativeMessage(request, sender) {
       String message = context['JSON'].callMethod('stringify',[request]);
  
positive.code:    * is done through the port of connection.
     */
    void _connect() {
  
      JsObject runtime = context['chrome']['runtime'];
      _port = runtime.callMethod('connectNative', [HOST_NAME]);
  
  
negative.code:     dartOnMessageEvent = (jsOnMessageEvent is JsObject ?
            jsOnMessageEvent : new JsObject.fromBrowserObject(jsOnMessageEvent));
      dartOnMessageEvent.callMethod('addListener', [_onDisconnected]);
    }
  
    void launchDartium(Notifier notifier, String path, String url) {
  