[DevTools] Switch from separate sendMessageToBackend method to using embedder.

Source/devtools/front_end/components/WorkerFrontendManager.js

 
 /*
  * Copyright (C) 2014 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.
@@ skipping 63 matching lines @@
     },
 
     _handleMessage: function(event)
     {
         var data = /** @type {{workerId: string, command: string, message: !Object}} */ (event.data);
         var workerId = data["workerId"];
         workerId = parseInt(workerId, 10);
         var command = data.command;
         var message = data.message;
 
-        if (command == "sendMessageToBackend")
+        if (command == "sendMessageToWorker")
             WorkerAgent.sendMessageToWorker(workerId, message);
     },
 
     _sendMessageToWorkerInspector: function(event)
     {
         var data = (event.data);
 
         var workerInspectorWindow = this._workerIdToWindow[data.workerId];
         if (workerInspectorWindow)
             workerInspectorWindow.postMessage(data.message, "*");
@@ skipping 68 matching lines @@
             WorkerAgent.disconnectFromWorker(parseInt(workerId, 10));
         }
     }
 
 }
 /**
  * @type {?WebInspector.WorkerFrontendManager}
  */
 WebInspector.workerFrontendManager = null;