MD Settings/About: Implement update progress percentage

chrome/test/data/webui/settings/about_page_tests.js

 // Copyright 2016 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.
 
 cr.define('settings_about_page', function() {
   /**
    * @constructor
    * @implements {settings.AboutPageBrowserProxy}
    * @extends {settings.TestBrowserProxy}
    */
@@ skipping 46 matching lines @@
       this.updateStatus_ = updateStatus;
     },
 
     /** @override */
     pageReady: function() {
       this.methodCalled('pageReady');
     },
 
     /** @override */
     refreshUpdateStatus: function() {
-      cr.webUIListenerCallback(
-          'update-status-changed', {status: this.updateStatus_});
+      cr.webUIListenerCallback('update-status-changed', {
+        progress: 0,
+        status: this.updateStatus_,
+      });
       this.methodCalled('refreshUpdateStatus');
     },
 
     /** @override */
     openFeedbackDialog: function() {
       this.methodCalled('openFeedbackDialog');
     },
 
     /** @override */
     openHelpPage: function() {
@@ skipping 52 matching lines @@
     TestAboutPageBrowserProxy.prototype.setChannel = function(
         channel, isPowerwashAllowed) {
       this.methodCalled('setChannel', [channel, isPowerwashAllowed]);
     };
   }
 
 
   function registerAboutPageTests() {
     /** @param {!UpdateStatus} status */
     function fireStatusChanged(status) {
-      cr.webUIListenerCallback('update-status-changed', {status: status});
+      cr.webUIListenerCallback('update-status-changed', {
+        progress: 0,
+        status: status,
+      });
     }
 
     suite('AboutPageTest', function() {
       var page = null;
 
       /** @type {?settings.TestAboutPageBrowserProxy} */
       var aboutBrowserProxy = null;
 
       /** @type {?settings.TestLifetimeBrowserProxy} */
       var lifetimeBrowserProxy = null;
@@ skipping 559 matching lines @@
     registerTests: function() {
       if (cr.isChromeOS) {
         registerDetailedBuildInfoTests();
         registerChannelSwitcherDialogTests();
       }
       registerAboutPageTests();
     },
     registerOfficialBuildTests: registerOfficialBuildTests,
   };
 });