Fix some JS style nits.

components/chrome_apps/webstore_widget/cws_widget/cws_widget_container.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.
 
 /**
  * CWSWidgetContainer contains a Chrome Web Store widget that displays list of
  * apps that satisfy certain constraints (e.g. fileHandler apps that can handle
  * files with specific file extension or MIME type) and enables the user to
  * install apps directly from it.
  * CWSWidgetContainer implements client side of the widget, which handles
@@ skipping 144 matching lines @@
   /**
    * The Chrome Web Store widget origin.
    * @const {string}
    * @private
    */
   this.widgetOrigin_ = params.overrideCwsContainerOriginForTest ||
       CWS_WIDGET_ORIGIN;
 
   /**
    * Map of options for the widget.
-   * @type {?Object.<string, *>}
+   * @type {?Object<string, *>}
    * @private
    */
   this.options_ = null;
 
   /**
    * The ID of the item being installed. Null if no items are being installed.
    * @type {?string}
    * @private
    */
   this.installingItemId_ = null;
@@ skipping 759 matching lines @@
   this.metricsImpl_.recordUserAction('SuggestApps.ShowDialog');
 };
 
 CWSWidgetContainer.MetricsRecorder.prototype.startLoad = function() {
   this.metricsImpl_.startInterval('SuggestApps.LoadTime');
 };
 
 CWSWidgetContainer.MetricsRecorder.prototype.finishLoad = function() {
   this.metricsImpl_.recordInterval('SuggestApps.LoadTime');
 };