chromium/ui/aura/window_tree_host_observer.h

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_AURA_WINDOW_TREE_HOST_OBSERVER_H_
#define UI_AURA_WINDOW_TREE_HOST_OBSERVER_H_

#include "base/containers/flat_set.h"
#include "components/viz/common/surfaces/frame_sink_id.h"
#include "ui/aura/aura_export.h"
#include "ui/aura/window.h"

class SkRegion;

namespace aura {
class WindowTreeHost;

class AURA_EXPORT WindowTreeHostObserver { … };

}  // namespace aura

#endif  // UI_AURA_WINDOW_TREE_HOST_OBSERVER_H_