Roll closure compiler

chrome/browser/resources/md_bookmarks/list.js

 // Copyright 2016 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.
 
 Polymer({
   is: 'bookmarks-list',
 
   behaviors: [
     bookmarks.StoreClient,
   ],
@@ skipping 55 matching lines @@
    * focus on incremental update.
    * @param {Array<string>} newValue
    * @param {Array<string>} oldValue
    */
   onDisplayedIdsChanged_: function(newValue, oldValue) {
     if (!oldValue) {
       this.displayedList_ = this.displayedIds_.map(function(id) {
         return {id: id};
       });
     } else {
-      var splices = Polymer.ArraySplice.calculateSplices(newValue, oldValue);
+      var splices = Polymer.ArraySplice.calculateSplices(
+          /** @type {!Array<string>} */ (newValue),
+          /** @type {!Array<string>} */ (oldValue));
       splices.forEach(function(splice) {
         // TODO(calamity): Could use notifySplices to improve performance here.
         var additions =
             newValue.slice(splice.index, splice.index + splice.addedCount)
                 .map(function(id) {
                   return {id: id};
                 });
         this.splice.apply(this, [
           'displayedList_', splice.index, splice.removed.length
         ].concat(additions));
@@ skipping 87 matching lines @@
 
         this.dispatch(bookmarks.actions.selectItem(
             this.displayedIds_[focusedIndex], this.getState(), config));
       }
     }
 
     if (handled)
       e.stopPropagation();
   },
 });