Fix some JS style nits.

components/chrome_apps/webstore_widget/app/main.js

 // Copyright 2015 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.
 
 //<include src="../../../../ui/webui/resources/js/cr.js">
 //<include src="../../../../ui/webui/resources/js/load_time_data.js">
 //<include src="../../../../ui/webui/resources/js/i18n_template_no_process.js">
 //<include src="../../../../ui/webui/resources/js/cr/event_target.js">
 //<include src="../../../../ui/webui/resources/js/cr/ui/dialogs.js">
 
 (function() {
 'use strict';
 
 //<include src="../cws_widget/app_installer.js">
 //<include src="../cws_widget/cws_webview_client.js">
 //<include src="../cws_widget/cws_widget_container.js">
 //<include src="../cws_widget/cws_widget_container_error_dialog.js">
 
 /**
  * @type {?{
- *   filter: !Object.<string, *>,
+ *   filter: !Object<string, *>,
  *   webstoreUrl: ?string
  * }}
  */
 window.params = window.params || null;
 
 /**
  * @param {string} id Element id.
  * @return {HTMLElement} The found element, or null.
  */
 function $(id) {
@@ skipping 14 matching lines @@
 
 /**
  * @param {string} id The string id.
  * @return {string}
  */
 function getString(id) {
   return loadTimeData.getString(id) || defaultStrings[id] || '';
 }
 
 /**
- * @param {Object.<string, string>} strings Localized strings used by the
+ * @param {Object<string, string>} strings Localized strings used by the
  *     container.
  * @return {!CWSWidgetContainer.PlatformDelegate}
  */
 function createPlatformDelegate(strings) {
   return {
     strings: {
       UI_LOCALE: getString('language'),
       LINK_TO_WEBSTORE: getString('LINK_TO_WEBSTORE'),
       INSTALLATION_FAILED_MESSAGE: getString('INSTALLATION_FAILED_MESSAGE')
     },
@@ skipping 24 matching lines @@
     installWebstoreItem: function(itemId, callback) {
       chrome.webstoreWidgetPrivate.installWebstoreItem(
           itemId,
           false,
           function() {
             callback(chrome.runtime.lastError ?
                 chrome.runtime.lastError.message || 'UNKNOWN_ERROR' : null);
           });
     },
 
-    /** @param {function(Array.<string>)} callback */
+    /** @param {function(Array<string>)} callback */
     getInstalledItems: function(callback) { callback([]); },
 
     /**
      * @param {function(?string)} callback The argument is the fetche3d access
      *     token. Null on error.
      */
     requestWebstoreAccessToken: function(callback) {
       chrome.fileManagerPrivate.requestWebStoreAccessToken(function(token) {
         if (chrome.runtime.lastError) {
           console.error('Error getting access token: ' +
@@ skipping 92 matching lines @@
           var result = widgetContainer.finalizeAndGetResult();
           showWidgetResult(result.result);
         })
         /** @param {*} error */
         .catch(function(error) {
           showWidgetResult(CWSWidgetContainer.Result.FAILED);
         });
   });
 });
 })();