Fix OAuth "trampoline" content script to send a message with the oauth results rather than using a …

remoting/webapp/oauth2_callback.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
- * chrome-extensions in OAuth2.
- */
-
-'use strict';
-
-var remoting = remoting || {};
-
-function retrieveRefreshToken() {
-  var query = window.location.search.substring(1);
-  var parts = query.split('&');
-  var queryArgs = {};
-  for (var i = 0; i < parts.length; i++) {
-    var pair = parts[i].split('=');
-    queryArgs[pair[0]] = pair[1];
-  }
-
-  if ('code' in queryArgs && 'state' in queryArgs) {
-    remoting.settings = new remoting.Settings();
-    var oauth2 = new remoting.OAuth2();
-    oauth2.exchangeCodeForToken(queryArgs['code'], queryArgs['state'],
-      function() {
-        window.location.replace(chrome.extension.getURL('main.html'));
-      });
-  } else {
-    window.location.replace(chrome.extension.getURL('main.html'));
-  }
-}
-
-window.addEventListener('load', retrieveRefreshToken, false);