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

components/sync/driver/sync_service_observer.h

Index: components/sync/driver/sync_service_observer.h
diff --git a/components/sync/driver/sync_service_observer.h b/components/sync/driver/sync_service_observer.h
index 0c6e68e361054231d818009a91ea21f3a0b89c91..d168f41709bc06da137182efd679295c2ac3ac25 100644
--- a/components/sync/driver/sync_service_observer.h
+++ b/components/sync/driver/sync_service_observer.h
@@ -5,7 +5,7 @@
 #ifndef COMPONENTS_SYNC_DRIVER_SYNC_SERVICE_OBSERVER_H_
 #define COMPONENTS_SYNC_DRIVER_SYNC_SERVICE_OBSERVER_H_
 
-namespace syncer {
+namespace sync_driver {
 
 // Various UI components such as the New Tab page can be driven by observing
 // the SyncService through this interface.
@@ -37,6 +37,6 @@ class SyncServiceObserver {
   virtual ~SyncServiceObserver() {}
 };
 
-}  // namespace syncer
+}  // namespace sync_driver
 
 #endif  // COMPONENTS_SYNC_DRIVER_SYNC_SERVICE_OBSERVER_H_