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

remoting/webapp/crd/js/oauth2_api.js

 // Copyright 2013 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 API flow implementations.
  */
 
 'use strict';
@@ skipping 56 matching lines @@
  * @param {string} clientSecret OAuth2 client secret.
  * @param {string} refreshToken OAuth2 refresh token to be redeemed.
  * @return {void} Nothing.
  */
 remoting.OAuth2Api.refreshAccessToken = function(
     onDone, onError, clientId, clientSecret, refreshToken) {
   /** @param {XMLHttpRequest} xhr */
   var onResponse = function(xhr) {
     if (xhr.status == 200) {
       try {
-        // Don't use jsonParseSafe here unless you move the definition out of
-        // remoting.js, otherwise this won't work from the OAuth trampoline.
+        // Don't use base.jsonParseSafe here unless you also include base.js,
+        // otherwise this won't work from the OAuth trampoline.
         // TODO(jamiewalch): Fix this once we're no longer using the trampoline.
         var tokens = JSON.parse(xhr.responseText);
         onDone(tokens['access_token'], tokens['expires_in']);
       } catch (err) {
         console.error('Invalid "token" response from server:',
                       /** @type {*} */ (err));
         onError(remoting.Error.UNEXPECTED);
       }
     } else {
       console.error('Failed to refresh token. Status: ' + xhr.status +
@@ skipping 26 matching lines @@
  * @param {string} code OAuth2 authorization code.
  * @param {string} redirectUri Redirect URI used to obtain this code.
  * @return {void} Nothing.
  */
 remoting.OAuth2Api.exchangeCodeForTokens = function(
     onDone, onError, clientId, clientSecret, code, redirectUri) {
   /** @param {XMLHttpRequest} xhr */
   var onResponse = function(xhr) {
     if (xhr.status == 200) {
       try {
-        // Don't use jsonParseSafe here unless you move the definition out of
-        // remoting.js, otherwise this won't work from the OAuth trampoline.
+        // Don't use base.jsonParseSafe here unless you also include base.js,
+        // otherwise this won't work from the OAuth trampoline.
         // TODO(jamiewalch): Fix this once we're no longer using the trampoline.
         var tokens = JSON.parse(xhr.responseText);
         onDone(tokens['refresh_token'],
                tokens['access_token'], tokens['expires_in']);
       } catch (err) {
         console.error('Invalid "token" response from server:',
                       /** @type {*} */ (err));
         onError(remoting.Error.UNEXPECTED);
       }
     } else {
@@ skipping 39 matching lines @@
     } else {
       console.error('Failed to get email. Status: ' + xhr.status +
                     ' response: ' + xhr.responseText);
       onError(remoting.OAuth2Api.interpretXhrStatus_(xhr.status));
     }
   };
   var headers = { 'Authorization': 'OAuth ' + token };
   remoting.xhr.get(remoting.OAuth2Api.getOAuth2ApiUserInfoEndpoint_(),
                    onResponse, '', headers);
 };