Settings: Introduce selectable styling and apply to search engines

chrome/test/data/webui/settings/search_engines_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_engines_page', function() {
   /**
    * @param {boolean} canBeDefault
    * @param {boolean} canBeEdited
    * @param {boolean} canBeRemoved
    * @return {!SearchEngine}
@@ skipping 263 matching lines @@
       teardown(function() { page.remove(); });
 
       // Tests that the page is querying and displaying search engine info on
       // startup.
       test('Initialization', function() {
         return browserProxy.whenCalled('getSearchEnginesList').then(function() {
           var searchEnginesLists = Polymer.dom(page.shadowRoot).
               querySelectorAll('settings-search-engines-list');
           assertEquals(2, searchEnginesLists.length);
 
+          // Note: iron-list may create hidden children, so test the length
+          // if IronList.items instead of the child nodes.
           Polymer.dom.flush();
           var defaultsList = searchEnginesLists[0];
           var defaultsEntries = Polymer.dom(defaultsList.shadowRoot).
-              querySelectorAll('settings-search-engine-entry');
+              querySelector('iron-list').items;
           assertEquals(
               searchEnginesInfo.defaults.length, defaultsEntries.length);
 
           var othersList = searchEnginesLists[1];
           var othersEntries = Polymer.dom(othersList.shadowRoot).
-              querySelectorAll('settings-search-engine-entry');
+              querySelector('iron-list').items;
           assertEquals(
               searchEnginesInfo.others.length, othersEntries.length);
 
           var extensionEntries = Polymer.dom(page.shadowRoot).
-              querySelectorAll('settings-omnibox-extension-entry');
+              querySelector('iron-list').items;
           assertEquals(
               searchEnginesInfo.extensions.length, extensionEntries.length);
         });
       });
 
       // Tests that the add search engine dialog opens when the corresponding
       // button is tapped.
       test('AddSearchEngineDialog', function() {
         assertFalse(!!page.$$('settings-search-engine-dialog'));
         var addSearchEngineButton = page.$.addSearchEngine;
@@ skipping 48 matching lines @@
 
   return {
     registerTests: function() {
       registerDialogTests();
       registerSearchEngineEntryTests();
       registerOmniboxExtensionEntryTests();
       registerPageTests();
     },
   };
 });