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

components/sync/driver/ui_model_type_controller.h

 // Copyright 2016 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_UI_MODEL_TYPE_CONTROLLER_H_
 #define COMPONENTS_SYNC_DRIVER_UI_MODEL_TYPE_CONTROLLER_H_
 
 #include "components/sync/driver/non_blocking_data_type_controller.h"
 
-namespace syncer {
+namespace sync_driver {
+class SyncClient;
+}
 
-class SyncClient;
+namespace sync_driver_v2 {
 
 // Implementation for Unified Sync and Storage datatypes that reside on the UI
 // thread.
 class UIModelTypeController : public NonBlockingDataTypeController {
  public:
   // |dump_stack| is called when an unrecoverable error occurs.
-  UIModelTypeController(ModelType type,
+  UIModelTypeController(syncer::ModelType type,
                         const base::Closure& dump_stack,
-                        SyncClient* sync_client);
+                        sync_driver::SyncClient* sync_client);
   ~UIModelTypeController() override;
 
  private:
   // NonBlockingDataTypeController implementations.
   // Since this is UI model type controller, we hide this function here.
   bool RunOnModelThread(const tracked_objects::Location& from_here,
                         const base::Closure& task) override;
 
   DISALLOW_COPY_AND_ASSIGN(UIModelTypeController);
 };
 
-}  // namespace syncer
+}  // namespace sync_driver_v2
 
 #endif  // COMPONENTS_SYNC_DRIVER_UI_MODEL_TYPE_CONTROLLER_H_