Delete athena/

athena/system/background_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 ATHENA_SYSTEM_BACKGROUND_CONTROLLER_H_
-#define ATHENA_SYSTEM_BACKGROUND_CONTROLLER_H_
-
-#include "base/macros.h"
-
-namespace aura {
-class Window;
-}
-
-namespace gfx {
-class ImageSkia;
-}
-
-namespace athena {
-class BackgroundView;
-
-// Controls background image switching.
-class BackgroundController {
- public:
-  explicit BackgroundController(aura::Window* background_container);
-  ~BackgroundController();
-
-  void SetImage(const gfx::ImageSkia& image);
-
- private:
-  BackgroundView* background_view_;
-
-  DISALLOW_COPY_AND_ASSIGN(BackgroundController);
-};
-
-}  // namespace athena
-
-#endif  // ATHENA_SYSTEM_BACKGROUND_CONTROLLER_H_