chromium/components/viz/common/hit_test/hit_test_region_observer.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_VIZ_COMMON_HIT_TEST_HIT_TEST_REGION_OBSERVER_H_
#define COMPONENTS_VIZ_COMMON_HIT_TEST_HIT_TEST_REGION_OBSERVER_H_

#include <vector>

#include "components/viz/common/hit_test/aggregated_hit_test_region.h"
#include "components/viz/common/surfaces/frame_sink_id.h"

namespace viz {

// An observer to be used within a Viz Host. Allows for notifications of when
// updated hit test regions have been provided. See HostFrameSinkManager for
// usage.
class HitTestRegionObserver { … };

}  // namespace viz

#endif  // COMPONENTS_VIZ_COMMON_HIT_TEST_HIT_TEST_REGION_OBSERVER_H_