Delete athena/

athena/activity/activity_manager_impl.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.
-
-#include "athena/activity/public/activity_manager.h"
-
-#include <vector>
-
-#include "base/macros.h"
-#include "base/observer_list.h"
-#include "ui/aura/window_observer.h"
-#include "ui/wm/public/activation_change_observer.h"
-
-namespace athena {
-
-class ActivityManagerObserver;
-
-class ActivityManagerImpl : public ActivityManager,
-                            public aura::WindowObserver,
-                            public aura::client::ActivationChangeObserver {
- public:
-  ActivityManagerImpl();
-  ~ActivityManagerImpl() override;
-
-  int num_activities() const { return activities_.size(); }
-
-  // ActivityManager:
-  void AddActivity(Activity* activity) override;
-  void RemoveActivity(Activity* activity) override;
-  const ActivityList& GetActivityList() override;
-  Activity* GetActivityForWindow(aura::Window* window) override;
-  void AddObserver(ActivityManagerObserver* observer) override;
-  void RemoveObserver(ActivityManagerObserver* observer) override;
-
- private:
-  // aura::WindowObserver:
-  void OnWindowDestroying(aura::Window* window) override;
-
-  // aura::client::ActivationChangeObserver:
-  void OnWindowActivated(aura::Window* gained_active,
-                         aura::Window* lost_active) override;
-
-  std::vector<Activity*> activities_;
-
-  ObserverList<ActivityManagerObserver> observers_;
-
-  DISALLOW_COPY_AND_ASSIGN(ActivityManagerImpl);
-};
-
-}  // namespace athena