Improve HRD first run experience

remoting/webapp/base/js/ipc.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
 *
 * In Chrome Apps, some platform APIs can only be called from the background
 * page (e.g. reloading a chrome.app.AppWindow).  Likewise, some chrome API's
 * must be initiated by user interaction, which can only be called from the
@@ skipping 71 matching lines @@
  * @private
  */
 base.Ipc.Request_ = function(methodName, params) {
   this.methodName = methodName;
   this.params = params;
 };
 
 
 /**
  * @param {string} methodName
- * @param {function(?)} handler The handler can be invoked by calling
+ * @param {function(...?)} handler The handler can be invoked by calling

[kelvinp, 2015/02/03 01:15:33]

Fix this to make it less restrictive.

  *   base.Ipc.invoke(|methodName|, arg1, arg2, ...)
  * Async handlers that return promises are currently not supported.
  * @return {boolean} Whether the handler is successfully registered.
  */
 base.Ipc.prototype.register = function(methodName, handler) {
   if (methodName in this.handlers_) {
     console.error('service ' + methodName + ' is already registered.');
     return false;
   }
   this.handlers_[methodName] = handler;
@@ skipping 75 matching lines @@
 };
 
 base.Ipc.deleteInstance = function() {
   if (instance_) {
     instance_.dispose_();
     instance_ = null;
   }
 };
 
 })();