[Chromoting] Update jscompile target to use JS files from gypi.

remoting/webapp/js_proto/remoting_proto.js

 // Copyright (c) 2012 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.
 
 // This file contains type definitions for various remoting classes.
 // It is used only with JSCompiler to verify the type-correctness of our code.
 
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
@@ skipping 145 matching lines @@
 /** @type {string} */ remoting.HostPlugin.prototype.supportedFeatures;
 
 
 /** @constructor
  *  @extends HTMLEmbedElement
  */
 remoting.ViewerPlugin = function() { };
 
 /** @param {string} message The message to send to the host. */
 remoting.ViewerPlugin.prototype.postMessage = function(message) {};
+
+
+/** @constructor
+ */
+remoting.WcsIqClient = function() {};
+
+/** @param {function(Array.<string>): void} onMsg The function called when a
+ *      message is received.
+ *  @return {void} Nothing. */
+remoting.WcsIqClient.prototype.setOnMessage = function(onMsg) {};
+
+/** @return {void} Nothing. */
+remoting.WcsIqClient.prototype.connectChannel = function() {};
+
+/** @param {string} stanza An IQ stanza.
+ *  @return {void} Nothing. */
+remoting.WcsIqClient.prototype.sendIq = function(stanza) {};
+
+/** @param {string} token An OAuth2 access token.
+ *  @return {void} Nothing. */
+remoting.WcsIqClient.prototype.updateAccessToken = function(token) {};