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

Source/devtools/front_end/host/InspectorFrontendHost.js

 /*
  * Copyright (C) 2009 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 203 matching lines @@
     recordActionTaken: function(actionCode) { },
 
     /**
      * @param {number} panelCode
      */
     recordPanelShown: function(panelCode) { },
 
     /**
      * @param {string} message
      */
-    sendMessageToBackend: function(message) { },
-
-    /**
-     * @param {string} message
-     */
-    sendMessageToEmbedder: function(message) { },
+    sendMessageToBrowser: function(message) { },
 
     /**
      * @param {boolean} enabled
      */
     setDeviceCountUpdatesEnabled: function(enabled) { },
 
     /**
      * @param {boolean} enabled
      */
     setDevicesUpdatesEnabled: function(enabled) { },
@@ skipping 187 matching lines @@
      * @param {string} content
      */
     append: function(url, content)
     {
         WebInspector.console.error("Saving files is not enabled in hosted mode. Please inspect using chrome://inspect");
     },
 
     /**
      * @param {string} message
      */
-    sendMessageToBackend: function(message)
+    sendMessageToBrowser: function(message)
     {
     },
 
-    /**
-     * @param {string} message
-     */
-    sendMessageToEmbedder: function(message)
-    {
-    },
-
     /**
      * @param {number} actionCode
      */
     recordActionTaken: function(actionCode)
     {
     },
 
     /**
      * @param {number} panelCode
      */
@@ skipping 239 matching lines @@
      * @param {number} id
      * @param {?string} error
      */
     embedderMessageAck: function(id, error)
     {
         InspectorFrontendHost["embedderMessageAck"](id, error);
     }
 }
 
 var InspectorFrontendAPI = new InspectorFrontendAPIImpl();