Move mocks and unittest JS files to sit alongside production code.

remoting/webapp/crd/js/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 184 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() {};