[Sync] Fix namespaces for the sync_sessions component.

components/sync_sessions/session_data_type_controller.h

Index: components/sync_sessions/session_data_type_controller.h
diff --git a/components/sync_sessions/session_data_type_controller.h b/components/sync_sessions/session_data_type_controller.h
index 06cebdfa339c15d2564cfbb00320aa081272ee45..a592599b5bb7ba4a500e3ef48d483834bd31e3e4 100644
--- a/components/sync_sessions/session_data_type_controller.h
+++ b/components/sync_sessions/session_data_type_controller.h
@@ -12,7 +12,7 @@
 #include "components/sync/device_info/local_device_info_provider.h"
 #include "components/sync/driver/ui_data_type_controller.h"
 
-namespace browser_sync {
+namespace sync_sessions {
 
 // Overrides StartModels to avoid sync contention with sessions during
 // a session restore operation at startup and to wait for the local
@@ -58,6 +58,6 @@ class SessionDataTypeController : public sync_driver::UIDataTypeController {
   DISALLOW_COPY_AND_ASSIGN(SessionDataTypeController);
 };
 
-}  // namespace browser_sync
+}  // namespace sync_sessions
 
 #endif  // COMPONENTS_SYNC_SESSIONS_SESSION_DATA_TYPE_CONTROLLER_H_