[Chromoting] Enable jscompile for browser tests.

remoting/webapp/browser_test/mock_identity.js

 // Copyright 2014 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
  * Mock implementation of chrome.identity.
  */
 
 'use strict';
@@ skipping 49 matching lines @@
 
 /**
  * @param {remoting.MockIdentity.AccessToken} accessToken
  */
 remoting.MockIdentity.prototype.setAccessToken = function(accessToken) {
   this.accessToken_ = accessToken;
 };
 
 /**
  * @param {string} token
- * @param {function()} onDone
- * @param {function()} onError
+ * @param {Function} onDone
+ * @param {function(remoting.Error)} onError
  * @param {Array<*>} values
  */
 remoting.MockIdentity.validateTokenAndCall =
     function(token, onDone, onError, values) {
   if (token == remoting.MockIdentity.AccessToken.VALID) {
     window.setTimeout(
         onDone.apply.bind(onDone, null, values),
         0);
   } else {
     window.setTimeout(
         onError.bind(null, remoting.Error.AUTHENTICATION_FAILED),
         0);
   }
 };
 
 /**
- * @param {function()} onDone
- * @param {function()} onError
+ * @param {Function} onDone
+ * @param {function(remoting.Error)} onError
  * @param {Array<*>} values
  */
 remoting.MockIdentity.prototype.validateTokenAndCall =
     function(onDone, onError, values) {
   remoting.MockIdentity.validateTokenAndCall(
       this.accessToken_, onDone, onError, values);
 };
 
 /**
  * @param {boolean} active
  */
 remoting.MockIdentity.setActive = function(active) {
   chrome.identity = active ? remoting.mockIdentity
                            : remoting.savedIdentityApi;
 };
 
 /** @type {Object} */
 remoting.savedIdentityApi = chrome.identity;
 
 /** @type {remoting.MockIdentity} */
 remoting.mockIdentity = new remoting.MockIdentity();