MD Bookmarks: Implement 'Sort by Title' menu button

chrome/browser/resources/md_bookmarks/toolbar.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-toolbar',
 
   behaviors: [
     bookmarks.StoreClient,
   ],
@@ skipping 27 matching lines @@
    * @param {Event} e
    * @private
    */
   onMenuButtonOpenTap_: function(e) {
     var menu = /** @type {!CrActionMenuElement} */ (this.$.dropdown);
     menu.showAt(/** @type {!Element} */ (e.target));
   },
 
   /** @private */
   onSortTap_: function() {
+    chrome.bookmarkManagerPrivate.sortChildren(
+        assert(this.getState().selectedFolder));
     this.closeDropdownMenu_();
   },
 
   /** @private */
   onAddBookmarkTap_: function() {
     var dialog =
         /** @type {BookmarksEditDialogElement} */ (this.$.addDialog.get());
     dialog.showAddDialog(false, assert(this.getState().selectedFolder));
     this.closeDropdownMenu_();
   },
@@ skipping 43 matching lines @@
   },
 
   /**
    * @return {boolean}
    * @private
    */
   hasSearchTerm_: function() {
     return !!this.searchTerm_;
   },
 });