chromium/chrome/browser/ui/tabs/tab_strip_model_stats_recorder.h

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_UI_TABS_TAB_STRIP_MODEL_STATS_RECORDER_H_
#define CHROME_BROWSER_UI_TABS_TAB_STRIP_MODEL_STATS_RECORDER_H_

#include <vector>

#include "base/memory/raw_ptr.h"
#include "chrome/browser/ui/browser_tab_strip_tracker.h"
#include "chrome/browser/ui/tabs/tab_strip_model_observer.h"

namespace content {
class WebContents;
}

// TabStripModelStatsRecorder records user tab interaction stats.
// In particular, we record tab's lifetime and state transition probability to
// study user interaction with background tabs. (crbug.com/517335)
class TabStripModelStatsRecorder : public TabStripModelObserver { … };

#endif  // CHROME_BROWSER_UI_TABS_TAB_STRIP_MODEL_STATS_RECORDER_H_