Fix JavaScript errors in options2

chrome/browser/resources/options2/search_engine_manager.js

 // Copyright (c) 2012 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('options', function() {
   const OptionsPage = options.OptionsPage;
   const ArrayDataModel = cr.ui.ArrayDataModel;
 
   /**
    * Encapsulated handling of search engine management page.
@@ skipping 61 matching lines @@
      * @private
      * @param {Array} defaultEngines List of possible default search engines.
      * @param {Array} otherEngines List of other search engines.
      * @param {Array} keywords List of keywords from extensions.
      */
     updateSearchEngineList_: function(defaultEngines, otherEngines, keywords) {
       this.defaultsList_.dataModel = new ArrayDataModel(defaultEngines);
 
       otherEngines = otherEngines.map(function(x) {
         return [x, x['name'].toLocaleLowerCase()];
-      }).sort(function(a,b){
+      }).sort(function(a, b) {
         return a[1].localeCompare(b[1]);
-      }).map(function(x){
+      }).map(function(x) {
         return x[0];
       });
 
       var othersModel = new ArrayDataModel(otherEngines);
       // Add a "new engine" row.
       othersModel.push({
         'modelIndex': '-1',
         'canBeEdited': true
       });
       this.othersList_.dataModel = othersModel;
@@ skipping 25 matching lines @@
         validity, modelIndex);
   };
 
   // Export
   return {
     SearchEngineManager: SearchEngineManager
   };
 
 });