[Sync] Convert DTCs to be not RefCounted and NonThreadSafe.

chrome/browser/supervised_user/supervised_user_sync_data_type_controller.h

Index: chrome/browser/supervised_user/supervised_user_sync_data_type_controller.h
diff --git a/chrome/browser/supervised_user/supervised_user_sync_data_type_controller.h b/chrome/browser/supervised_user/supervised_user_sync_data_type_controller.h
index d8e7050fc76c0b0c645c7f3a23bdbadc66b6759b..f2a7fb79d735d4b473ccc33a2ad152558695bae1 100644
--- a/chrome/browser/supervised_user/supervised_user_sync_data_type_controller.h
+++ b/chrome/browser/supervised_user/supervised_user_sync_data_type_controller.h
@@ -21,16 +21,14 @@ class SupervisedUserSyncDataTypeController
     : public sync_driver::UIDataTypeController {
  public:
   SupervisedUserSyncDataTypeController(syncer::ModelType type,
-                                       const base::Closure& error_callback,
+                                       const base::Closure& dump_stack,
                                        sync_driver::SyncClient* sync_client,
                                        Profile* profile);
+  ~SupervisedUserSyncDataTypeController() override;
 
   bool ReadyForStart() const override;
 
  private:
-  // DataTypeController is RefCounted.
-  ~SupervisedUserSyncDataTypeController() override;
-
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserSyncDataTypeController);