Added (incomplete) implementation of HostListApi using GCD.

remoting/webapp/crd/js/host_controller.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.
 
 'use strict';
 
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
 /** @constructor */
@@ skipping 164 matching lines @@
   /** @type {!Promise<string>} */
   var authCodePromise = Promise.all([
     hostClientIdPromise,
     hostNamePromise,
     keyPairPromise
   ]).then(function(/** Array */ a) {
     var hostClientId = /** @type {string} */ (a[0]);
     var hostName = /** @type {string} */ (a[1]);
     var keyPair = /** @type {remoting.KeyPair} */ (a[2]);
 
-    return remoting.hostListApi.register(
+    return remoting.HostListApi.getInstance().register(
         newHostId, hostName, keyPair.publicKey, hostClientId);
-  }).then(function(/** string */ authCode) {
+  }).then(function(/** string */ result) {
     hostRegistered = true;
-    return authCode;
+    return result;
   });
 
   // Get XMPP creditials.
   var xmppCredsPromise = authCodePromise.then(function(authCode) {
     if (authCode) {
-      // Use auth code supplied by registry.
+      // Use auth code supplied by Chromoting registry.
       return that.hostDaemonFacade_.getCredentialsFromAuthCode(authCode);
     } else {
       // No authorization code returned, use regular Chrome
-      // identitial credential flow.
+      // identity credential flow.
       return remoting.identity.getEmail().then(function(/** string */ email) {
         return {
           userEmail: email,
           refreshToken: remoting.oauth2.getRefreshToken()
         };
       });
     }
   });
 
   // Get as JID to use as the host owner.
@@ skipping 297 matching lines @@
     emailPromise.then(function(/** string */ email) {
       signalStrategy.connect(remoting.settings.XMPP_SERVER, email, token);
     });
   });
 
   return result;
 };
 
 /** @type {remoting.HostController} */
 remoting.hostController = null;