[Chromoting] Move app-specific code out of remoting.js

remoting/webapp/crd/js/crd_event_handlers.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 || {};
 
 remoting.initElementEventHandlers = function() {
@@ skipping 66 matching lines @@
       { event: 'click', id: 'sign-out', fn:remoting.signOut },
       { event: 'click', id: 'token-refresh-error-ok', fn: goHome },
       { event: 'click', id: 'token-refresh-error-sign-in',
         fn: remoting.handleAuthFailureAndRelaunch }
   ];
   registerEventListeners(it2me_actions);
   registerEventListeners(me2me_actions);
   registerEventListeners(host_actions);
   registerEventListeners(auth_actions);
 }
+
+/**
+ * Sign the user out of Chromoting by clearing (and revoking, if possible) the
+ * OAuth refresh token.
+ *
+ * Also clear all local storage, to avoid leaking information.
+ */
+remoting.signOut = function() {
+  remoting.oauth2.removeCachedAuthToken().then(function(){
+    chrome.storage.local.clear();
+    remoting.setMode(remoting.AppMode.HOME);
+    window.location.reload();
+  });
+};
+