MD Settings: Simplify settings-dropdown-menu

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 11 matching lines @@
   __proto__: PolymerTest.prototype,
 
   /** @override */
   browsePreload: 'chrome://md-settings/prefs/prefs.html',
 
   commandLineSwitches: [{switchName: 'enable-md-settings'}],
 
   /** @override */
   extraLibraries: PolymerTest.getLibraries(ROOT_PATH).concat([
     'checkbox_tests.js',
+    'dropdown_menu_tests.js',
     'pref_util_tests.js',
     'prefs_test_cases.js',
     'prefs_tests.js',
   ]),
 };
 
 // Have to include command_line.h manually due to GEN calls below.
 GEN('#include "base/command_line.h"');
 
 // Times out on memory bots. http://crbug.com/534718
 GEN('#if defined(MEMORY_SANITIZER)');
 GEN('#define MAYBE_CrSettingsTest DISABLED_CrSettingsTest');
 GEN('#else');
 GEN('#define MAYBE_CrSettingsTest CrSettingsTest');
 GEN('#endif');
 
 // Runs all tests.
 TEST_F('CrSettingsBrowserTest', 'MAYBE_CrSettingsTest', function() {
   // Register mocha tests for each element.
   settings_checkbox.registerTests();
+  settings_dropdown_menu.registerTests();
   settings_prefUtil.registerTests();
   settings_prefs.registerTests();
 
   // Run all registered tests.
   mocha.run();
 });