Added HostListApl implementation to connect to legacy directory and GCD.

remoting/webapp/crd/js/legacy_host_list_api_unittest.js

 // Copyright 2015 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
  * Unit tests for host_controller.js.
  */
 
 (function() {
@@ skipping 48 matching lines @@
       });
 }
 
 QUnit.test('register', function(assert) {
   var impl = new remoting.LegacyHostListApi();
   queueRegistryResponse(assert);
   return impl.register(
       FAKE_HOST_NAME,
       FAKE_PUBLIC_KEY,
       FAKE_HOST_CLIENT_ID
-  ). then(function(regResult) {
+  ).then(function(regResult) {
     assert.equal(regResult.authCode, FAKE_AUTH_CODE);
     assert.equal(regResult.email, '');
   });
 });
 
 QUnit.test('register failure', function(assert) {
   var impl = new remoting.LegacyHostListApi();
   remoting.MockXhr.setEmptyResponseFor(
       'POST', 'DIRECTORY_API_BASE_URL/@me/hosts', 500);
   return impl.register(
       FAKE_HOST_NAME,
       FAKE_PUBLIC_KEY,
       FAKE_HOST_CLIENT_ID
   ).then(function(authCode) {
     throw 'test failed';
   }, function(/** remoting.Error */ e) {
     assert.equal(e.getTag(), remoting.Error.Tag.REGISTRATION_FAILED);
   });
 });
 
 })();