Refactor sync-specific parts out of SyncNotifier/SyncNotifierObserver

chrome/browser/sync/glue/chrome_sync_notification_bridge.h

Index: chrome/browser/sync/glue/chrome_sync_notification_bridge.h
diff --git a/chrome/browser/sync/glue/chrome_sync_notification_bridge.h b/chrome/browser/sync/glue/chrome_sync_notification_bridge.h
index bda23b4fde4b5c614ff588aecb4c7eb52480a7fd..a878ff711f14e999c7282a637f1108433ef7d8b0 100644
--- a/chrome/browser/sync/glue/chrome_sync_notification_bridge.h
+++ b/chrome/browser/sync/glue/chrome_sync_notification_bridge.h
@@ -11,6 +11,7 @@
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "sync/internal_api/public/base/model_type.h"
+#include "sync/notifier/invalidation_util.h"
 
 class Profile;
 
@@ -38,8 +39,8 @@ class ChromeSyncNotificationBridge : public content::NotificationObserver {
   // Must be called on the sync task runner.
   void UpdateEnabledTypes(syncer::ModelTypeSet enabled_types);
   // Marked virtual for tests.
-  virtual void AddObserver(syncer::SyncNotifierObserver* observer);
-  virtual void RemoveObserver(syncer::SyncNotifierObserver* observer);
+  virtual void UpdateRegisteredIds(syncer::SyncNotifierObserver* handler,
+                                   const syncer::ObjectIdSet& ids);
 
   // NotificationObserver implementation. Called on UI thread.
   virtual void Observe(int type,