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

chrome/browser/sync/glue/extension_setting_data_type_controller.h

 // Copyright (c) 2012 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 CHROME_BROWSER_SYNC_GLUE_EXTENSION_SETTING_DATA_TYPE_CONTROLLER_H__
 #define CHROME_BROWSER_SYNC_GLUE_EXTENSION_SETTING_DATA_TYPE_CONTROLLER_H__
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "components/sync/driver/non_ui_data_type_controller.h"
 
 class Profile;
 
 namespace extensions {
 class StorageFrontend;
 }
 
-namespace syncer {
+namespace sync_driver {
 class SyncClient;
 }
 
 namespace browser_sync {
 
 class ExtensionSettingDataTypeController
-    : public syncer::NonUIDataTypeController {
+    : public sync_driver::NonUIDataTypeController {
  public:
   // |type| is either EXTENSION_SETTINGS or APP_SETTINGS.
   // |dump_stack| is called when an unrecoverable error occurs.
   ExtensionSettingDataTypeController(syncer::ModelType type,
                                      const base::Closure& dump_stack,
-                                     syncer::SyncClient* sync_client,
+                                     sync_driver::SyncClient* sync_client,
                                      Profile* profile);
   ~ExtensionSettingDataTypeController() override;
 
   // NonFrontendDataTypeController implementation
   syncer::ModelSafeGroup model_safe_group() const override;
 
  private:
   // NonFrontendDataTypeController implementation.
   bool PostTaskOnBackendThread(const tracked_objects::Location& from_here,
                                const base::Closure& task) override;
   bool StartModels() override;
 
   // Only used on the UI thread.
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionSettingDataTypeController);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_EXTENSION_SETTING_DATA_TYPE_CONTROLLER_H__