Add Polymer tests for cr-settings-prefs

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 Chromium Polymer elements tests. */
+/** @fileoverview Runs the Polymer Settings tests. */
 
 /** @const {string} Path to source root. */
 var ROOT_PATH = '../../../../../';
 
 // Polymer BrowserTest fixture.
 GEN_INCLUDE(
     [ROOT_PATH + 'chrome/test/data/webui/polymer_browser_test_base.js']);
 
 /**
- * Test fixture for Chromium Polymer elements.
+ * Test fixture for Polymer Settings elements.
  * @constructor
  * @extends {PolymerTest}
 */
-function CrElementsBrowserTest() {}
+function CrSettingsBrowserTest() {}
 
-CrElementsBrowserTest.prototype = {
+CrSettingsBrowserTest.prototype = {
   __proto__: PolymerTest.prototype,
 
-  // List tests for individual elements.
+  /** @override */
+  browsePreload: 'chrome://md-settings/prefs/prefs.html',
+
+  commandLineSwitches: [{switchName: 'enable-md-settings'}],
+
+  /** @override */
   extraLibraries: PolymerTest.getLibraries(ROOT_PATH).concat([
-    'cr_checkbox_tests.js',
+    'prefs_tests.js',
   ]),
 };
 
 // Runs all tests.
-TEST_F('CrElementsBrowserTest', 'CrElementsTest', function() {
+TEST_F('CrSettingsBrowserTest', 'CrSettingsTest', function() {
   // Register mocha tests for each element.
-  cr_checkbox.registerTests();
+  cr_settings_prefs.registerTests();
 
   // Run all registered tests.
   mocha.run();
 });