[MD settings] rename advancedSubmenu id

chrome/browser/resources/settings/settings_menu/settings_menu.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.
 
 /**
  * @fileoverview
  * 'settings-menu' shows a menu with a hardcoded set of pages and subpages.
  */
 Polymer({
   is: 'settings-menu',
@@ skipping 25 matching lines @@
     // the first tap to close an opened Advanced section does nothing (because
     // it calls .open() on an opened menu instead of .close(). This is a fix for
     // that bug without changing that code through its public API.
     //
     // TODO(dbeam): we're currently deciding whether <paper-{,sub}menu> are
     // right for our needs (there have been minor a11y problems). If we decide
     // to keep <paper-{,sub}menu>, fix this bug with a local Chrome CL (ex:
     // https://codereview.chromium.org/2412343004) or a Polymer PR (ex:
     // https://github.com/PolymerElements/paper-menu/pull/107).
     if (this.advancedOpened)
-      this.$.advancedPage.open();
+      this.$.advancedSubmenu.open();
   },
 
   /**
    * @param {!settings.Route} newRoute
    */
   currentRouteChanged: function(newRoute) {
     // Make the three menus mutually exclusive.
     if (settings.Route.ABOUT.contains(newRoute)) {
       this.aboutSelected_ = true;
       this.$.advancedMenu.selected = null;
@@ skipping 24 matching lines @@
 
   /**
    * @param {boolean} opened Whether the menu is expanded.
    * @return {string} Which icon to use.
    * @private
    * */
   arrowState_: function(opened) {
     return opened ? 'cr:arrow-drop-up' : 'cr:arrow-drop-down';
   },
 });