[DevTools] Move extension embedder message to InspectorFrontentAPI.

Source/devtools/front_end/devtools_app/DevToolsApp.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @implements {InspectorAppHostAPI}
  */
 WebInspector.DevToolsApp = function()
 {
     window.InspectorAppHost = this;
 
-    // FIXME: These methods are invoked from the backend and should be removed
-    // once we migrate to the "pull" model for extensions retrieval.
-    WebInspector.addExtensions = this._wrapInvocation.bind(this, "addExtensions");
-    WebInspector.setInspectedTabId = this._wrapInvocation.bind(this, "setInspectedTabId");
-    this._invokeOnWebInspectorOnceLoaded = [];
-
     /**
      * @type {?Window}
      */
     this._inspectorWindow = null;
 }
 
 WebInspector.DevToolsApp.prototype = {
     /**
      * @param {!Window} inspectorWindow
      * @override
@@ skipping 14 matching lines @@
             // FIXME: move Tests to the host or teach browser counterpart about iframe.
             window.uiTests = this._inspectorWindow.uiTests;
         }
     },
 
     /**
      * @override
      */
     afterInspectorAppLoad: function()
     {
-        while (this._invokeOnWebInspectorOnceLoaded.length) {
-            var methodAndParams = this._invokeOnWebInspectorOnceLoaded.shift();
-            this._invokeOnWebInspector(methodAndParams[0], methodAndParams[1]);
-        }
-    },
-
-    /**
-     * @param {string} method
-     */
-    _wrapInvocation: function(method)
-    {
-        var params = Array.prototype.slice.call(arguments, 1);
-        if (this._inspectorWindow) {
-            this._invokeOnWebInspector(method, params);
-        } else {
-            this._invokeOnWebInspectorOnceLoaded.push([method, params]);
-        }
-    },
-
-    /**
-     * @param {string} method
-     * @param {!Array.<*>} params
-     */
-    _invokeOnWebInspector: function(method, params)
-    {
-        var webInspector = this._inspectorWindow["WebInspector"];
-        webInspector[method].apply(webInspector, params);
     }
 }
 
 new WebInspector.DevToolsApp();