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

components/history/core/browser/history_delete_directives_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_HISTORY_CORE_BROWSER_HISTORY_DELETE_DIRECTIVES_DATA_TYPE_CONTROLLER_H_
 #define COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_DELETE_DIRECTIVES_DATA_TYPE_CONTROLLER_H_
 
 #include "base/macros.h"
 #include "components/sync/device_info/local_device_info_provider.h"
 #include "components/sync/driver/sync_service_observer.h"
 #include "components/sync/driver/ui_data_type_controller.h"
 
 namespace browser_sync {
 
 // A controller for delete directives, which cannot sync when full encryption
 // is enabled.
 class HistoryDeleteDirectivesDataTypeController
-    : public syncer::UIDataTypeController,
-      public syncer::SyncServiceObserver {
+    : public sync_driver::UIDataTypeController,
+      public sync_driver::SyncServiceObserver {
  public:
   // |dump_stack| is called when an unrecoverable error occurs.
-  HistoryDeleteDirectivesDataTypeController(const base::Closure& dump_stack,
-                                            syncer::SyncClient* sync_client);
+  HistoryDeleteDirectivesDataTypeController(
+      const base::Closure& dump_stack,
+      sync_driver::SyncClient* sync_client);
   ~HistoryDeleteDirectivesDataTypeController() override;
 
   // UIDataTypeController override.
   bool ReadyForStart() const override;
   bool StartModels() override;
   void StopModels() override;
 
-  // syncer::SyncServiceObserver implementation.
+  // sync_driver::SyncServiceObserver implementation.
   void OnStateChanged() override;
 
  private:
   // Triggers a SingleDataTypeUnrecoverable error and returns true if the
   // type is no longer ready, else does nothing and returns false.
   bool DisableTypeIfNecessary();
 
-  syncer::SyncClient* sync_client_;
+  sync_driver::SyncClient* sync_client_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryDeleteDirectivesDataTypeController);
 };
 
 }  // namespace browser_sync
 
 #endif  // COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_DELETE_DIRECTIVES_DATA_TYPE_CONTROLLER_H_