Converted remoting.Error from an enum to a class

remoting/webapp/crd/js/wcs_adapter.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.
 
 'use strict';
 
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
 /**
@@ skipping 44 matching lines @@
   remoting.wcsSandbox.setOnIq(this.onIncomingStanza_.bind(this));
   remoting.wcsSandbox.connect(this.onWcsConnected_.bind(this),
                               this.onError_.bind(this));
 };
 
 /** @return {remoting.SignalStrategy.State} Current state */
 remoting.WcsAdapter.prototype.getState = function() {
   return this.state_;
 };
 
-/** @return {remoting.Error} Error when in FAILED state. */
+/** @return {!remoting.Error} Error when in FAILED state. */
 remoting.WcsAdapter.prototype.getError = function() {
   return this.error_;
 };
 
 /** @return {string} Current JID when in CONNECTED state. */
 remoting.WcsAdapter.prototype.getJid = function() {
   return this.jid_;
 };
 
 /** @return {remoting.SignalStrategy.Type} The signal strategy type. */
@@ skipping 54 matching lines @@
     }
   } catch (err) {
     // Pass message as is when it is malformed.
   }
 
   if (this.onIncomingStanzaCallback_) {
     this.onIncomingStanzaCallback_(parsed);
   }
 };
 
-/** @param {remoting.Error} error */
+/** @param {!remoting.Error} error */
 remoting.WcsAdapter.prototype.onError_ = function(error) {
   this.error_ = error;
   this.setState_(remoting.SignalStrategy.State.FAILED);
 };
 
 /**
  * @param {remoting.SignalStrategy.State} newState
  * @private
  */
 remoting.WcsAdapter.prototype.setState_ = function(newState) {
   if (this.state_ != newState) {
     this.state_ = newState;
     this.onStateChangedCallback_(this.state_);
   }
 };