Fix JavaScript errors in options2

chrome/browser/resources/options2/content_settings_exceptions_area.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.contentSettings', function() {
   const InlineEditableItemList = options.InlineEditableItemList;
   const InlineEditableItem = options.InlineEditableItem;
   const ArrayDataModel = cr.ui.ArrayDataModel;
 
   /**
@@ skipping 102 matching lines @@
 
       // Editing notifications and geolocation is disabled for now.
       if (this.contentType == 'notifications' ||
           this.contentType == 'location') {
         this.editable = false;
       }
 
       // If the source of the content setting exception is not the user
       // preference, then the content settings exception is managed and the user
       // can't edit it.
-      if (this.dataItem.source  &&
+      if (this.dataItem.source &&
           this.dataItem.source != 'preference') {
         this.setAttribute('managedby', this.dataItem.source);
         this.deletable = false;
         this.editable = false;
       }
 
       var listItem = this;
       // Handle events on the editable nodes.
       input.oninput = function(event) {
         listItem.inputValidityKnown = false;
@@ skipping 408 matching lines @@
     }
   };
 
   return {
     ExceptionsListItem: ExceptionsListItem,
     ExceptionsAddRowListItem: ExceptionsAddRowListItem,
     ExceptionsList: ExceptionsList,
     ContentSettingsExceptionsArea: ContentSettingsExceptionsArea,
   };
 });