MD Settings: remove unsupported routes from guest-mode.

chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js

Index: chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js
diff --git a/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js b/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js
index 104106c15991117d5367b5d9e6aa983a11c99848..35b5c4399dbdfb8dac6792165a6a17430a04c014 100644
--- a/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js
+++ b/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js
@@ -70,9 +70,11 @@ Polymer({
       type: Object,
       value: function() {
         var map = new Map();
-        map.set(
-            settings.Route.BLUETOOTH_DEVICES.path,
-            '#bluetoothDevices .subpage-arrow');
+        if (settings.routes.BLUETOOTH_DEVICES) {
+          map.set(
+              settings.routes.BLUETOOTH_DEVICES.path,
+              '#bluetoothDevices .subpage-arrow');
+        }
         return map;
       },
     },
@@ -212,6 +214,6 @@ Polymer({
 
   /** @private */
   openSubpage_: function() {
-    settings.navigateTo(settings.Route.BLUETOOTH_DEVICES);
+    settings.navigateTo(settings.routes.BLUETOOTH_DEVICES);
   }
 });