Fix presubmit js style nits.

chrome/browser/resources/chromeos/user_images_grid.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', function() {
-  const ArrayDataModel = cr.ui.ArrayDataModel;
-  const Grid = cr.ui.Grid;
-  const GridItem = cr.ui.GridItem;
-  const GridSelectionController = cr.ui.GridSelectionController;
-  const ListSingleSelectionModel = cr.ui.ListSingleSelectionModel;
+  /** @const */ var ArrayDataModel = cr.ui.ArrayDataModel;
+  /** @const */ var Grid = cr.ui.Grid;
+  /** @const */ var GridItem = cr.ui.GridItem;
+  /** @const */ var GridSelectionController = cr.ui.GridSelectionController;
+  /** @const */ var ListSingleSelectionModel = cr.ui.ListSingleSelectionModel;
 
   /**
    * Creates a new user images grid item.
    * @param {{url: string, title: string=, decorateFn: function=,
    *     clickHandler: function=}} imageInfo User image URL, optional title,
    *     decorator callback and click handler.
    * @constructor
    * @extends {cr.ui.GridItem}
    */
   function UserImagesGridItem(imageInfo) {
@@ skipping 227 matching lines @@
   UserImagesGrid.ButtonImages = {
     TAKE_PHOTO: 'chrome://theme/IDR_BUTTON_USER_IMAGE_TAKE_PHOTO',
     CHOOSE_FILE: 'chrome://theme/IDR_BUTTON_USER_IMAGE_CHOOSE_FILE',
     PROFILE_PICTURE: 'chrome://theme/IDR_PROFILE_PICTURE_LOADING'
   };
 
   return {
     UserImagesGrid: UserImagesGrid
   };
 });