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

components/sync/driver/proxy_data_type_controller.h

 // 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.
 
 #ifndef COMPONENTS_SYNC_DRIVER_PROXY_DATA_TYPE_CONTROLLER_H__
 #define COMPONENTS_SYNC_DRIVER_PROXY_DATA_TYPE_CONTROLLER_H__
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "components/sync/driver/data_type_controller.h"
 
-namespace syncer {
+namespace sync_driver {
 
 // Implementation for proxy datatypes. These are datatype that have no
 // representation in sync, and therefore no change processor or syncable
 // service.
 class ProxyDataTypeController : public DataTypeController {
  public:
-  explicit ProxyDataTypeController(ModelType type);
+  explicit ProxyDataTypeController(syncer::ModelType type);
   ~ProxyDataTypeController() override;
 
   // DataTypeController interface.
   bool ShouldLoadModelBeforeConfigure() const override;
   void LoadModels(const ModelLoadCallback& model_load_callback) override;
   void RegisterWithBackend(BackendDataTypeConfigurer* configurer) override;
   void StartAssociating(const StartCallback& start_callback) override;
   void Stop() override;
   std::string name() const override;
   State state() const override;
   void ActivateDataType(BackendDataTypeConfigurer* configurer) override;
   void DeactivateDataType(BackendDataTypeConfigurer* configurer) override;
   void GetAllNodes(const AllNodesCallback& callback) override;
 
  protected:
-  std::unique_ptr<DataTypeErrorHandler> CreateErrorHandler() override;
+  std::unique_ptr<syncer::DataTypeErrorHandler> CreateErrorHandler() override;
 
  private:
   State state_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyDataTypeController);
 };
 
-}  // namespace syncer
+}  // namespace sync_driver
 
 #endif  // COMPONENTS_SYNC_DRIVER_PROXY_DATA_TYPE_CONTROLLER_H__