chromium/cc/metrics/begin_main_frame_metrics.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 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 { … };

}  // namespace cc

#endif  // CC_METRICS_BEGIN_MAIN_FRAME_METRICS_H_