MD Settings: Search page, switching paper-dropdown-menu to native select.

chrome/test/data/webui/settings/search_page_test.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_search_page', function() {
   function generateSearchEngineInfo() {
     var searchEngines0 = settings_search.createSampleSearchEngine(
         true, false, false);
     searchEngines0.default = true;
     var searchEngines1 = settings_search.createSampleSearchEngine(
@@ skipping 24 matching lines @@
         PolymerTest.clearBody();
         page = document.createElement('settings-search-page');
         document.body.appendChild(page);
       });
 
       teardown(function() { page.remove(); });
 
       // Tests that the page is querying and displaying search engine info on
       // startup.
       test('Initialization', function() {
-        var listboxElement = page.$$('paper-listbox');
+        var selectElement = page.$$('select');
 
         return browserProxy.whenCalled('getSearchEnginesList').then(function() {
-          assertEquals(0, listboxElement.selected);
+          Polymer.dom.flush();
+          assertEquals(0, selectElement.selectedIndex);
 
           // Simulate a user initiated change of the default search engine.
-          listboxElement.selected = 1;
+          selectElement.selectedIndex = 1;
+          selectElement.dispatchEvent(new CustomEvent('change'));
           return browserProxy.whenCalled('setDefaultSearchEngine');
         }).then(function() {
-          assertEquals(1, listboxElement.selected);
+          assertEquals(1, selectElement.selectedIndex);
 
           // Simulate a change that happened in a different tab.
           var searchEnginesInfo = generateSearchEngineInfo();
           searchEnginesInfo.defaults[0].default = false;
           searchEnginesInfo.defaults[1].default = false;
           searchEnginesInfo.defaults[2].default = true;
 
           browserProxy.resetResolver('setDefaultSearchEngine');
           cr.webUIListenerCallback('search-engines-changed', searchEnginesInfo);
-          assertEquals(2, listboxElement.selected);
+          Polymer.dom.flush();
+          assertEquals(2, selectElement.selectedIndex);
 
           browserProxy.whenCalled('setDefaultSearchEngine').then(function() {
             // Since the change happened in a different tab, there should be no
             // new call to |setDefaultSearchEngine|.
             assertNotReached('Should not call setDefaultSearchEngine again');
           });
         });
       });
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });