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

components/sync/driver/backend_data_type_configurer.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/sync/driver/backend_data_type_configurer.h"
 
-namespace syncer {
+namespace sync_driver {
 
 // static
-ModelTypeSet BackendDataTypeConfigurer::GetDataTypesInState(
+syncer::ModelTypeSet BackendDataTypeConfigurer::GetDataTypesInState(
     DataTypeConfigState state,
     const DataTypeConfigStateMap& state_map) {
-  ModelTypeSet types;
+  syncer::ModelTypeSet types;
   for (DataTypeConfigStateMap::const_iterator type_it = state_map.begin();
        type_it != state_map.end(); ++type_it) {
     if (type_it->second == state)
       types.Put(type_it->first);
   }
   return types;
 }
 
 // static
 void BackendDataTypeConfigurer::SetDataTypesState(
     DataTypeConfigState state,
-    ModelTypeSet types,
+    syncer::ModelTypeSet types,
     DataTypeConfigStateMap* state_map) {
-  for (ModelTypeSet::Iterator it = types.First(); it.Good(); it.Inc()) {
+  for (syncer::ModelTypeSet::Iterator it = types.First(); it.Good(); it.Inc()) {
     (*state_map)[it.Get()] = state;
   }
 }
 
-}  // namespace syncer
+}  // namespace sync_driver