MD Settings: remove unsupported routes from guest-mode.

chrome/browser/resources/settings/printing_page/printing_page.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: 'settings-printing-page',
 
   properties: {
     /** Preferences state. */
     prefs: {
@@ skipping 22 matching lines @@
 
     searchTerm: {
       type: String,
     },
 
     /** @private {!Map<string, string>} */
     focusConfig_: {
       type: Object,
       value: function() {
         var map = new Map();
-        map.set(
-            settings.Route.CLOUD_PRINTERS.path,
-            '#cloudPrinters .subpage-arrow');
+        if (settings.routes.CLOUD_PRINTERS) {
+          map.set(
+              settings.routes.CLOUD_PRINTERS.path,
+              '#cloudPrinters .subpage-arrow');
+        }
         // <if expr="chromeos">
-        map.set(
-            settings.Route.CUPS_PRINTERS.path, '#cupsPrinters .subpage-arrow');
+        if (settings.routes.CUPS_PRINTERS) {
+          map.set(
+              settings.routes.CUPS_PRINTERS.path,
+              '#cupsPrinters .subpage-arrow');
+        }
         // </if>
         return map;
       },
     },
   },
 
   listeners: {
     'show-cups-printer-details': 'onShowCupsPrinterDetailsPage_',
   },
 
   // <if expr="chromeos">
   /** @private */
   onTapCupsPrinters_: function() {
-    settings.navigateTo(settings.Route.CUPS_PRINTERS);
+    settings.navigateTo(settings.routes.CUPS_PRINTERS);
   },
 
   /** @private */
   onShowCupsPrinterDetailsPage_: function(event) {
-    settings.navigateTo(settings.Route.CUPS_PRINTER_DETAIL);
+    settings.navigateTo(settings.routes.CUPS_PRINTER_DETAIL);
     this.$.arraySelector.select(event.detail);
   },
   // </if>
 
   /** @private */
   onTapCloudPrinters_: function() {
-    settings.navigateTo(settings.Route.CLOUD_PRINTERS);
+    settings.navigateTo(settings.routes.CLOUD_PRINTERS);
   },
 });