Allow the background page to get an OAuth token for apps v1.

remoting/webapp/crd/js/oauth2.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.
 
 /**
  * @fileoverview
  * OAuth2 class that handles retrieval/storage of an OAuth2 token.
  *
  * Uses a content script to trampoline the OAuth redirect page back into the
  * extension context.  This works around the lack of native support for
@@ skipping 145 matching lines @@
  * @return {{token: string, expiration: number}} The current access token, or
  * an invalid token if not authenticated.
  */
 remoting.OAuth2.prototype.getAccessTokenInternal_ = function() {
   if (!window.localStorage.getItem(this.KEY_ACCESS_TOKEN_)) {
     // Always be able to return structured data.
     this.setAccessToken_('', 0);
   }
   var accessToken = window.localStorage.getItem(this.KEY_ACCESS_TOKEN_);
   if (typeof accessToken == 'string') {
-    var result = jsonParseSafe(accessToken);
+    var result = base.jsonParseSafe(accessToken);
     if (result && 'token' in result && 'expiration' in result) {
       return /** @type {{token: string, expiration: number}} */ result;
     }
   }
   console.log('Invalid access token stored.');
   return {'token': '', 'expiration': 0};
 };
 
 /**
  * Returns true if the access token is expired, or otherwise invalid.
@@ skipping 53 matching lines @@
 remoting.OAuth2.prototype.onTokens_ =
     function(onOk, refreshToken, accessToken, expiresIn) {
   this.setAccessToken_(accessToken, expiresIn);
   this.setRefreshToken_(refreshToken);
   onOk();
 };
 
 /**
  * Redirect page to get a new OAuth2 Refresh Token.
  *
+ * @param {function():void} onDone Completion callback.
  * @return {void} Nothing.
  */
-remoting.OAuth2.prototype.doAuthRedirect = function() {
+remoting.OAuth2.prototype.doAuthRedirect = function(onDone) {
   /** @type {remoting.OAuth2} */
   var that = this;
-  var xsrf_token = remoting.generateXsrfToken();
+  var xsrf_token = base.generateXsrfToken();
   window.localStorage.setItem(this.KEY_XSRF_TOKEN_, xsrf_token);
   var GET_CODE_URL = this.getOAuth2AuthEndpoint_() + '?' +
     remoting.xhr.urlencodeParamHash({
           'client_id': this.getClientId_(),
           'redirect_uri': this.getRedirectUri_(),
           'scope': this.SCOPE_,
           'state': xsrf_token,
           'response_type': 'code',
           'access_type': 'offline',
           'approval_prompt': 'force'
         });
 
   /**
    * Processes the results of the oauth flow.
    *
    * @param {Object.<string, string>} message Dictionary containing the parsed
    *   OAuth redirect URL parameters.
    */
   function oauth2MessageListener(message) {
     if ('code' in message && 'state' in message) {
-      var onDone = function() {
-        window.location.reload();
-      };
       that.exchangeCodeForToken(
           message['code'], message['state'], onDone);
     } else {
       if ('error' in message) {
         console.error(
             'Could not obtain authorization code: ' + message['error']);
       } else {
         // We intentionally don't log the response - since we don't understand
         // it, we can't tell if it has sensitive data.
         console.error('Invalid oauth2 response.');
@@ skipping 90 matching lines @@
  * @return {?string} The email address, if it has been cached by a previous call
  *     to getEmail, otherwise null.
  */
 remoting.OAuth2.prototype.getCachedEmail = function() {
   var value = window.localStorage.getItem(this.KEY_EMAIL_);
   if (typeof value == 'string') {
     return value;
   }
   return null;
 };