MD Settings: Implement search URLs.

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 880 matching lines @@
 function CrSettingsMainPageTest() {}
 
 CrSettingsMainPageTest.prototype = {
   __proto__: CrSettingsBrowserTest.prototype,
 
   /** @override */
   browsePreload: 'chrome://md-settings/settings_main/settings_main.html',
 
   /** @override */
   extraLibraries: CrSettingsBrowserTest.prototype.extraLibraries.concat([
+    'test_browser_proxy.js',
     'settings_main_test.js',
   ]),
 };
 
 TEST_F('CrSettingsMainPageTest', 'MAYBE_MainPage_All', function() {
   settings_main_page.registerTests();
   mocha.run();
 });
 
 /**
@@ skipping 70 matching lines @@
   browsePreload: 'chrome://md-settings/settings_action_menu.html',
 
   extraLibraries: CrSettingsBrowserTest.prototype.extraLibraries.concat([
     'settings_action_menu_test.js',
   ]),
 };
 
 TEST_F('CrSettingsActionMenuTest', 'All', function() {
   mocha.run();
 });