MD Settings: remove unsupported routes from guest-mode.

chrome/browser/resources/settings/settings_page/settings_animated_pages.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-animated-pages' is a container for a page and animated subpages.
  * It provides a set of common behaviors and animations.
  *
  * Example:
@@ skipping 48 matching lines @@
     if (!this.focusConfig || !this.previousRoute_)
       return;
 
     // Don't attempt to focus any anchor element, unless last navigation was a
     // 'pop' (backwards) navigation.
     if (!settings.lastRouteChangeWasPopstate())
       return;
 
     // Only handle iron-select events from neon-animatable elements and the
     // given whitelist of settings-subpage instances.
-    var whitelist = 'settings-subpage#site-settings, ' +
-        'settings-subpage[route-path=\"' +
-        settings.Route.SITE_SETTINGS_COOKIES.path + '\"]';
+    var whitelist = 'settings-subpage#site-settings';
+
+    if (settings.routes.SITE_SETTINGS_COOKIES) {
+      whitelist += ', settings-subpage[route-path=\"' +
+          settings.routes.SITE_SETTINGS_COOKIES.path + '\"]';
+    }
 
     // <if expr="chromeos">
-    whitelist += ', settings-subpage[route-path=\"' +
-        settings.Route.INTERNET_NETWORKS.path + '\"]';
+    if (settings.routes.INTERNET_NETWORKS) {
+      whitelist += ', settings-subpage[route-path=\"' +
+          settings.routes.INTERNET_NETWORKS.path + '\"]';
+    }
     // </if>
 
     if (!e.detail.item.matches('neon-animatable, ' + whitelist))
       return;
 
     var selector = this.focusConfig.get(this.previousRoute_.path);
     if (selector) {
       // neon-animatable has "display: none" until the animation finishes, so
       // calling focus() on any of its children has no effect until "display:
       // none" is removed. Therefore, don't set focus from within the
@@ skipping 110 matching lines @@
     // instance, such that the stamped instance will also be ignored by the
     // searching algorithm.
     if (template.hasAttribute('no-search'))
       subpage.setAttribute('no-search', '');
 
     // Render synchronously so neon-animated-pages can select the subpage.
     template.if = true;
     template.render();
   },
 });