Beginnings of synchronizing notifications in the notification database.

chrome/browser/notifications/message_center_notification_manager.h

Index: chrome/browser/notifications/message_center_notification_manager.h
diff --git a/chrome/browser/notifications/message_center_notification_manager.h b/chrome/browser/notifications/message_center_notification_manager.h
index 986f9cc1c1e2ce157f4944fe09af0e3958f86a87..a5a2149c89154d23ec5806f8f9104b5167649cea 100644
--- a/chrome/browser/notifications/message_center_notification_manager.h
+++ b/chrome/browser/notifications/message_center_notification_manager.h
@@ -61,6 +61,7 @@ class MessageCenterNotificationManager
   std::set<std::string> GetAllIdsByProfileAndSourceOrigin(
       Profile* profile,
       const GURL& source) override;
+  std::set<std::string> GetAllIdsByProfile(Profile* profile) override;
   bool CancelAllBySourceOrigin(const GURL& source_origin) override;
   bool CancelAllByProfile(ProfileID profile_id) override;
   void CancelAll() override;