Remove MediaStream renderer from the webapp.

remoting/webapp/browser_test/mock_client_plugin.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.
 
 /**
  * @fileoverview
  * Mock implementation of ClientPlugin for testing.
  * @suppress {checkTypes}
  */
 
@@ skipping 79 matching lines @@
 remoting.MockClientPlugin.prototype.onIncomingIq = function(iq) {};
 
 remoting.MockClientPlugin.prototype.isSupportedVersion = function() {
   return true;
 };
 
 remoting.MockClientPlugin.prototype.hasFeature = function(feature) {
   return false;
 };
 
-remoting.MockClientPlugin.prototype.enableMediaSourceRendering =
-    function(mediaSourceRenderer) {};
-
 remoting.MockClientPlugin.prototype.sendClipboardItem =
     function(mimeType, item) {};
 
 remoting.MockClientPlugin.prototype.useAsyncPinDialog = function() {};
 
 remoting.MockClientPlugin.prototype.requestPairing =
     function(clientName, onDone) {};
 
 remoting.MockClientPlugin.prototype.onPinFetched = function(pin) {};
 
@@ skipping 65 matching lines @@
  * @extends {remoting.ClientPluginFactory}
  */
 remoting.MockClientPluginFactory = function() {};
 
 remoting.MockClientPluginFactory.prototype.createPlugin =
     function(container, onExtensionMessage) {
   return new remoting.MockClientPlugin(container);
 };
 
 remoting.MockClientPluginFactory.prototype.preloadPlugin = function() {};