Webapp changes to support third party authentication

remoting/webapp/client_screen.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
  * Functions related to the 'client screen' for Chromoting.
  */
 
 'use strict';
@@ skipping 233 matching lines @@
  */
 remoting.connectMe2MeHostVersionAcknowledged_ = function(host) {
   if (!remoting.connector) {
     remoting.connector = new remoting.SessionConnector(
         document.getElementById('session-mode'),
         remoting.onConnected,
         showConnectError_);
   }
   remoting.setMode(remoting.AppMode.CLIENT_CONNECTING);
 
+/**
+ * @param {string} tokenUrl Token-issue URL received from the host.
+ * @param {string} scope OAuth scope to request the token for.
+ * @param {function(string, string):void} onThirdPartyTokenFetched Callback.
+ */
+  var fetchThirdPartyToken = function(
+      tokenUrl, hostPublicKey, scope, onThirdPartyTokenFetched) {
+    var thirdPartyTokenFetcher = new remoting.ThirdPartyTokenFetcher(
+        tokenUrl, hostPublicKey, scope, host.tokenUrlPatterns,
+        onThirdPartyTokenFetched);
+    thirdPartyTokenFetcher.fetchToken();
+  };
+
   /** @param {function(string):void} onPinFetched */
   var requestPin = function(onPinFetched) {
     /** @type {Element} */
     var pinForm = document.getElementById('pin-form');
     /** @type {Element} */
     var pinCancel = document.getElementById('cancel-pin-entry-button');
     /**
      * Event handler for both the 'submit' and 'cancel' actions. Using
      * a single handler for both greatly simplifies the task of making
      * them one-shot. If separate handlers were used, each would have
@@ skipping 15 matching lines @@
         remoting.setMode(remoting.AppMode.HOME);
       }
     };
     pinForm.addEventListener('submit', onSubmitOrCancel, false);
     pinCancel.addEventListener('click', onSubmitOrCancel, false);
 
     var message = document.getElementById('pin-message');
     l10n.localizeElement(message, host.hostName);
     remoting.setMode(remoting.AppMode.CLIENT_PIN_PROMPT);
   };
-  remoting.connector.connectMe2Me(host, requestPin);
+  remoting.connector.connectMe2Me(host, requestPin, fetchThirdPartyToken);
 };
 
 /** @param {remoting.ClientSession} clientSession */
 remoting.onConnected = function(clientSession) {
   remoting.clientSession = clientSession;
   remoting.clientSession.setOnStateChange(onClientStateChange_);
   setConnectionInterruptedButtonsText_();
   var connectedTo = document.getElementById('connected-to');
   connectedTo.innerText = clientSession.hostDisplayName;
   remoting.setMode(remoting.AppMode.IN_SESSION);
   remoting.toolbar.center();
   remoting.toolbar.preview();
   remoting.clipboard.startSession();
   updateStatistics_();
 };