DOMUI Prefs: Implement inline editability for startup pages

chrome/browser/resources/options/startup_page_manager.js

 // Copyright (c) 2010 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;
-  const ListSelectionModel = cr.ui.ListSelectionModel;
+  const ListSingleSelectionModel = cr.ui.ListSingleSelectionModel;
 
   /**
    * Encapsulated handling of startup page management page.
    * @constructor
    */
   function StartupPageManager() {
     this.activeNavTab = null;
     OptionsPage.call(this, 'startupPages',
                      templateData.StartupPageManagerPage,
                      'startupPageManagerPage');
   }
 
   cr.addSingletonGetter(StartupPageManager);
 
   StartupPageManager.prototype = {
     __proto__: OptionsPage.prototype,
     list_: null,
 
     initializePage: function() {
       OptionsPage.prototype.initializePage.call(this);
 
       var list = $('startupPagesFullList');
       options.browser_options.StartupPageList.decorate(list);
       list.autoExpands = true;
-      list.selectionModel = new ListSelectionModel;
+      list.selectionModel = new ListSingleSelectionModel;
 
       // Wire up controls.
       $('startupAddButton').onclick = function(event) {
         OptionsPage.showOverlay('addStartupPageOverlay');
       };
 
       // Remove Windows-style accelerators from button labels.
       // TODO(stuartmorgan): Remove this once the strings are updated.
       $('startupAddButton').textContent =
           localStrings.getStringWithoutAccelerator('startupAddButton');
@@ skipping 27 matching lines @@
     StartupPageManager.getInstance().addStartupPage_(url);
   };
 
   // Export
   return {
     StartupPageManager: StartupPageManager
   };
 
 });