Revert 105404 - [Sync] Refactor non-frontend DTC to handle new API properly.

chrome/browser/sync/glue/non_frontend_data_type_controller.h

Index: chrome/browser/sync/glue/non_frontend_data_type_controller.h
===================================================================
--- chrome/browser/sync/glue/non_frontend_data_type_controller.h	(revision 105407)
+++ chrome/browser/sync/glue/non_frontend_data_type_controller.h	(working copy)
@@ -133,14 +133,10 @@
   ProfileSyncFactory* profile_sync_factory() const;
   Profile* profile() const;
   ProfileSyncService* profile_sync_service() const;
-  void set_start_callback(StartCallback* callback);
   void set_state(State state);
+  void set_model_associator(AssociatorInterface* associator);
+  void set_change_processor(ChangeProcessor* change_processor);
 
-  virtual AssociatorInterface* associator() const;
-  virtual void set_model_associator(AssociatorInterface* associator);
-  virtual ChangeProcessor* change_processor() const;
-  virtual void set_change_processor(ChangeProcessor* change_processor);
-
  private:
   ProfileSyncFactory* const profile_sync_factory_;
   Profile* const profile_;