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// 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 CC_METRICS_BEGIN_MAIN_FRAME_METRICS_H_
#define CC_METRICS_BEGIN_MAIN_FRAME_METRICS_H_
#include "base/time/time.h"
#include "cc/cc_export.h"
namespace cc {
// Latency timing data for Main Frame lifecycle updates triggered by cc.
// The data is captured in LocalFrameViewUKMAggregator and passed back through
// the proxy when a main frame ends. LayerTreeHost updates the update_layers_
// value in LayerTreeHost::UpdateLayers.
struct CC_EXPORT BeginMainFrameMetrics {
base::TimeDelta handle_input_events;
base::TimeDelta animate;
base::TimeDelta style_update;
base::TimeDelta layout_update;
base::TimeDelta accessibility;
base::TimeDelta prepaint;
base::TimeDelta compositing_inputs;
base::TimeDelta paint;
base::TimeDelta composite_commit;
base::TimeDelta update_layers;
// True if we should measure smoothness in TotalFrameCounter and
// DroppedFrameCounter. Currently true when first contentful paint is done.
bool should_measure_smoothness = false;
BeginMainFrameMetrics();
BeginMainFrameMetrics(const BeginMainFrameMetrics& other);
BeginMainFrameMetrics& operator=(const BeginMainFrameMetrics& other);
};
} // namespace cc
#endif // CC_METRICS_BEGIN_MAIN_FRAME_METRICS_H_
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