chromium/chrome/browser/metrics/desktop_session_duration/chrome_visibility_observer.h

// Copyright 2016 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_METRICS_DESKTOP_SESSION_DURATION_CHROME_VISIBILITY_OBSERVER_H_
#define CHROME_BROWSER_METRICS_DESKTOP_SESSION_DURATION_CHROME_VISIBILITY_OBSERVER_H_

#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "chrome/browser/ui/browser_list_observer.h"

namespace metrics {
// Observer for tracking browser visibility events.
class ChromeVisibilityObserver : public BrowserListObserver { … };

}  // namespace metrics

#endif  // CHROME_BROWSER_METRICS_DESKTOP_SESSION_DURATION_CHROME_VISIBILITY_OBSERVER_H_