[Sync] On disabling sync, device info records are removed.

components/sync/model/model_type_service.h

Index: components/sync/model/model_type_service.h
diff --git a/components/sync/model/model_type_service.h b/components/sync/model/model_type_service.h
index 9e63c8f571e47082d00f1156d9c98369074135a6..3d39d5b16687db84b56f7ea3e3bf599baf34813c 100644
--- a/components/sync/model/model_type_service.h
+++ b/components/sync/model/model_type_service.h
@@ -111,8 +111,7 @@ class ModelTypeService : public base::SupportsWeakPtr<ModelTypeService> {
   // Indicates that we no longer want to do any sync-related things for this
   // data type. Severs all ties to the sync thread, deletes all local sync
   // metadata, and then destroys the change processor.
-  // TODO(crbug.com/584365): This needs to be called from DataTypeController.
-  void DisableSync();
+  virtual void DisableSync();
 
   ModelTypeChangeProcessor* change_processor() const;