MD Downloads: fix the compiled_resources2.gyp compile

chrome/browser/resources/md_downloads/manager.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.
 
 cr.define('downloads', function() {
   var Manager = Polymer({
     is: 'downloads-manager',
 
     properties: {
       hasDownloads_: {
@@ skipping 131 matching lines @@
     },
 
     /**
      * @param {number} index
      * @param {!downloads.Data} data
      * @private
      */
     updateItem_: function(index, data) {
       this.set('items_.' + index, data);
       this.updateHideDates_(index, index);
-      this.$['downloads-list'].updateSizeForItem(index);
+      var list = /** @type {!IronListElement} */(this.$['downloads-list']);
+      list.updateSizeForItem(index);
     },
   });
 
   Manager.clearAll = function() {
     Manager.get().clearAll_();
   };
 
   /** @return {!downloads.Manager} */
   Manager.get = function() {
     return /** @type {!downloads.Manager} */(
@@ skipping 11 matching lines @@
   Manager.removeItem = function(index) {
     Manager.get().removeItem_(index);
   };
 
   Manager.updateItem = function(index, data) {
     Manager.get().updateItem_(index, data);
   };
 
   return {Manager: Manager};
 });