[Sync] Move //components/sync to the syncer namespace.

components/sync/driver/data_type_controller.cc

Index: components/sync/driver/data_type_controller.cc
diff --git a/components/sync/driver/data_type_controller.cc b/components/sync/driver/data_type_controller.cc
index e68ed4f3ac97c7f910fa6c11f0f9ec94b89ec15a..295ab44ea774fb1bcb4c69a83de90130ae3fc9ee 100644
--- a/components/sync/driver/data_type_controller.cc
+++ b/components/sync/driver/data_type_controller.cc
@@ -8,9 +8,9 @@
 #include "components/sync/base/model_type.h"
 #include "components/sync/core/user_share.h"
 
-namespace sync_driver {
+namespace syncer {
 
-DataTypeController::DataTypeController(syncer::ModelType type,
+DataTypeController::DataTypeController(ModelType type,
                                        const base::Closure& dump_stack)
     : dump_stack_(dump_stack), type_(type) {}
 
@@ -32,4 +32,4 @@ bool DataTypeController::CalledOnValidThread() const {
   return thread_checker_.CalledOnValidThread();
 }
 
-}  // namespace sync_driver
+}  // namespace syncer