Delete athena/

athena/wm/public/window_manager_observer.h

Index: athena/wm/public/window_manager_observer.h
diff --git a/athena/wm/public/window_manager_observer.h b/athena/wm/public/window_manager_observer.h
deleted file mode 100644
index b128afcb896d5e4c9cd51bf7d0dce4d85944abb7..0000000000000000000000000000000000000000
--- a/athena/wm/public/window_manager_observer.h
+++ /dev/null
@@ -1,31 +0,0 @@
-// 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_SCREEN_PUBLIC_WINDOW_MANAGER_OBSERVER_H_
-#define ATHENA_SCREEN_PUBLIC_WINDOW_MANAGER_OBSERVER_H_
-
-#include "athena/athena_export.h"
-
-namespace athena {
-
-class ATHENA_EXPORT WindowManagerObserver {
- public:
-  virtual ~WindowManagerObserver() {}
-
-  // Called immediately before the overview mode is displayed.
-  virtual void OnOverviewModeEnter() = 0;
-
-  // Called immediately after going out of the overview mode.
-  virtual void OnOverviewModeExit() = 0;
-
-  // Called immediately before the split view mode is activated.
-  virtual void OnSplitViewModeEnter() = 0;
-
-  // Called immediately after going out of the split view mode.
-  virtual void OnSplitViewModeExit() = 0;
-};
-
-}  // namespace athena
-
-#endif  // ATHENA_SCREEN_PUBLIC_WINDOW_MANAGER_OBSERVER_H_