Fix broken threading model in CheckDesktopNotificationPermission

chrome/browser/notifications/desktop_notification_service.h

Index: chrome/browser/notifications/desktop_notification_service.h
diff --git a/chrome/browser/notifications/desktop_notification_service.h b/chrome/browser/notifications/desktop_notification_service.h
index 61cc48bdd8e52ab651f40f8a35d0126aa4916a3a..c4bf9611f1d7428202c853c6c49dcb48e921d5ba 100644
--- a/chrome/browser/notifications/desktop_notification_service.h
+++ b/chrome/browser/notifications/desktop_notification_service.h
@@ -151,11 +151,6 @@ class DesktopNotificationService : public BrowserContextKeyedService,
 
   ContentSetting GetContentSetting(const GURL& origin);
 
-  // Checks to see if a given origin has permission to create desktop
-  // notifications.
-  blink::WebNotificationPresenter::Permission
-      HasPermission(const GURL& origin);
-
   // Returns true if the notifier with |notifier_id| is allowed to send
   // notifications.
   bool IsNotifierEnabled(const message_center::NotifierId& notifier_id);