Revert of Revert "Typecheck JS files for chrome://extensions"

chrome/browser/resources/extensions/chromeos/kiosk_app_list.js

 // Copyright 2013 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.
 
+/**
+ * The type of the app data object. The definition is based on
+ * chrome/browser/ui/webui/extensions/chromeos/kiosk_apps_handler.cc:
+ *     PopulateAppDict()
+ * @typedef {{id: string,
+ *            name: string,
+ *            iconURL: string,
+ *            autoLaunch: boolean,
+ *            isLoading: boolean}}
+ */
+var AppDict;
+
 cr.define('extensions', function() {
   /** @const */ var List = cr.ui.List;
   /** @const */ var ListItem = cr.ui.ListItem;
   /** @const */ var ArrayDataModel = cr.ui.ArrayDataModel;
 
   /**
    * Creates a list for showing kiosk apps.
    * @constructor
    * @extends {cr.ui.List}
    */
@@ skipping 27 matching lines @@
     /**
      * Loads the given list of apps.
      * @param {!Array.<!Object>} apps An array of app info objects.
      */
     setApps: function(apps) {
       this.dataModel = new ArrayDataModel(apps);
     },
 
     /**
      * Updates the given app.
-     * @param {!Object} app An app info object.
+     * @param {!AppDict} app An app info object.
      */
     updateApp: function(app) {
       for (var i = 0; i < this.items.length; ++i) {
         if (this.items[i].data.id == app.id) {
           this.items[i].data = app;
           break;
         }
       }
     }
   };
@@ skipping 85 matching lines @@
       this.icon.style.backgroundImage = 'url(' + this.data.iconURL + ')';
 
       this.name.textContent = this.data.name || this.data.id;
       this.status.textContent = this.data.autoLaunch ?
           loadTimeData.getString('autoLaunch') : '';
 
       this.autoLaunch = this.data.autoLaunch;
     }
   };
 
-  /*
+  /**
    * True if the app represented by this item will auto launch.
-   * @type {boolean}
    */
   cr.defineProperty(KioskAppListItem, 'autoLaunch', cr.PropertyKind.BOOL_ATTR);
 
   // Export
   return {
     KioskAppList: KioskAppList
   };
 });