Revert of [Sync] Move //components/sync to the syncer namespace. (patchset #5 id:40001 of https://co

components/sync/driver/data_type_manager_observer.h

Index: components/sync/driver/data_type_manager_observer.h
diff --git a/components/sync/driver/data_type_manager_observer.h b/components/sync/driver/data_type_manager_observer.h
index 5135559cd551d4f439faa101ca8344e5ab4f7409..f6904b65e069315c0f46de98abe7b75d7732a28e 100644
--- a/components/sync/driver/data_type_manager_observer.h
+++ b/components/sync/driver/data_type_manager_observer.h
@@ -7,7 +7,7 @@
 
 #include "components/sync/driver/data_type_manager.h"
 
-namespace syncer {
+namespace sync_driver {
 
 // Various data type configuration events can be consumed by observing the
 // DataTypeManager through this interface.
@@ -21,6 +21,6 @@ class DataTypeManagerObserver {
   virtual ~DataTypeManagerObserver() {}
 };
 
-}  // namespace syncer
+}  // namespace sync_driver
 
 #endif  // COMPONENTS_SYNC_DRIVER_DATA_TYPE_MANAGER_OBSERVER_H_