Add a reason for configuring DTM for backup/rollback. In backup/rollback,

chrome/browser/sync/glue/data_type_manager_impl.cc

Index: chrome/browser/sync/glue/data_type_manager_impl.cc
diff --git a/chrome/browser/sync/glue/data_type_manager_impl.cc b/chrome/browser/sync/glue/data_type_manager_impl.cc
index 3c14d48d94c3985167a9b5cf1eb29e31ba081767..391ccd4cb82f8387ef025cdf4bebf7f2b29ad325 100644
--- a/chrome/browser/sync/glue/data_type_manager_impl.cc
+++ b/chrome/browser/sync/glue/data_type_manager_impl.cc
@@ -77,7 +77,10 @@ DataTypeManagerImpl::~DataTypeManagerImpl() {}
 
 void DataTypeManagerImpl::Configure(syncer::ModelTypeSet desired_types,
                                     syncer::ConfigureReason reason) {
-  desired_types.PutAll(syncer::CoreTypes());
+  if (reason == syncer::CONFIGURE_REASON_BACKUP_ROLLBACK)
+    desired_types.PutAll(syncer::ControlTypes());
+  else
+    desired_types.PutAll(syncer::CoreTypes());
 
   // Only allow control types and types that have controllers.
   syncer::ModelTypeSet filtered_desired_types;