[Webapp Refactor] Cleans up the ClientSession.EventHandler interface.

remoting/webapp/crd/js/client_session_factory_unittest.js

 // Copyright 2015 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.
 
 (function() {
 
 'use strict';
 
 /** @type {remoting.MockConnection} */
 var mockConnection;
 /** @type {remoting.ClientSessionFactory} */
 var factory;
 /** @type {remoting.ClientSession.EventHandler} */
 var listener;
 
 /**
  * @constructor
  * @implements {remoting.ClientSession.EventHandler}
  */
 var SessionListener = function() {};
 SessionListener.prototype.onConnectionFailed = function(error) {};
 SessionListener.prototype.onConnected = function(connectionInfo) {};
-SessionListener.prototype.onDisconnected = function() {};
+SessionListener.prototype.onDisconnected = function(reason) {};
 SessionListener.prototype.onError = function(error) {};
 
 QUnit.module('ClientSessionFactory', {
   beforeEach: function() {
     chromeMocks.activate(['identity']);
     chromeMocks.identity.mock$setToken('fake_token');
 
     mockConnection = new remoting.MockConnection();
     listener = new SessionListener();
     factory = new remoting.ClientSessionFactory(
@@ skipping 52 matching lines @@
     assert.ok(false, 'Expect createSession() to fail.');
   }).catch(function(/** remoting.Error */ error) {
     assert.ok(
         signalStrategyDispose.called, 'SignalStrategy is disposed on failure.');
     assert.ok(error.hasTag(remoting.Error.Tag.MISSING_PLUGIN),
         'Initialization failed with MISSING_PLUGIN.');
   });
 });
 
 })();