chromium/components/performance_manager/freezing/frozen_frame_aggregator.h

// Copyright 2019 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_PERFORMANCE_MANAGER_FREEZING_FROZEN_FRAME_AGGREGATOR_H_
#define COMPONENTS_PERFORMANCE_MANAGER_FREEZING_FROZEN_FRAME_AGGREGATOR_H_

#include "components/performance_manager/public/graph/frame_node.h"
#include "components/performance_manager/public/graph/graph.h"
#include "components/performance_manager/public/graph/node_data_describer.h"
#include "components/performance_manager/public/graph/page_node.h"
#include "components/performance_manager/public/graph/process_node.h"

namespace performance_manager {

class FrameNodeImpl;

// The FrozenFrameAggregator is responsible for tracking frame frozen states,
// and aggregating this property to the page and process nodes. As a GraphOwned
// object it takes care of registering itself as an observer when added to the
// graph.
class FrozenFrameAggregator : public FrameNode::ObserverDefaultImpl,
                              public GraphOwnedDefaultImpl,
                              public NodeDataDescriberDefaultImpl,
                              public PageNode::ObserverDefaultImpl,
                              public ProcessNode::ObserverDefaultImpl { … };

}  // namespace performance_manager

#endif  // COMPONENTS_PERFORMANCE_MANAGER_FREEZING_FROZEN_FRAME_AGGREGATOR_H_