Delete athena/

athena/wm/public/window_list_provider_observer.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_WM_PUBLIC_WINDOW_LIST_PROVIDER_OBSERVER_H_
-#define ATHENA_WM_PUBLIC_WINDOW_LIST_PROVIDER_OBSERVER_H_
-
-#include "athena/athena_export.h"
-
-namespace aura {
-class Window;
-}
-
-namespace athena {
-
-// An observer to window list changes like e.g. stacking order has changed.
-class ATHENA_EXPORT WindowListProviderObserver {
- public:
-  virtual ~WindowListProviderObserver() {}
-
-  // The Window stacking has changed.
-  virtual void OnWindowStackingChangedInList() = 0;
-
-  // A valid window has added to the list.
-  virtual void OnWindowAddedToList(aura::Window* window) = 0;
-
-  // The specified Window has been removed from the list. At the time of
-  // removal, |removed_window| was at the |index| position in the window list.
-  virtual void OnWindowRemovedFromList(aura::Window* removed_window,
-                                       int index) = 0;
-};
-
-}  // namespace athena
-
-#endif  // ATHENA_WM_PUBLIC_WINDOW_LIST_PROVIDER_OBSERVER_H_