md-settings: Fix back navigation from /resetProfileSettings.

chrome/test/data/webui/settings/cr_settings_browsertest.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 Runs the Polymer Settings tests. */
 
 /** @const {string} Path to source root. */
 var ROOT_PATH = '../../../../../';
 
 // Polymer BrowserTest fixture.
@@ skipping 286 matching lines @@
 function CrSettingsResetPageTest() {}
 
 CrSettingsResetPageTest.prototype = {
   __proto__: CrSettingsBrowserTest.prototype,
 
   /** @override */
   browsePreload: 'chrome://md-settings/reset_page/reset_page.html',
 
   /** @override */
   extraLibraries: CrSettingsBrowserTest.prototype.extraLibraries.concat([
+    '../test_util.js',
     'test_browser_proxy.js',
     'test_lifetime_browser_proxy.js',
     'reset_page_test.js',
   ]),
 };
 
 TEST_F('CrSettingsResetPageTest', 'ResetPage', function() {
   settings_reset_page.registerTests();
   mocha.run();
 });
@@ skipping 532 matching lines @@
     'test_privacy_page_browser_proxy.js',
     'metrics_reporting_tests.js',
   ]),
 };
 
 TEST_F('CrSettingsMetricsReportingTest', 'All', function() {
   mocha.run();
 });
 
 GEN('#endif');