session_restore_stats_collector.h | Explore in Territory

// 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_SESSIONS_SESSION_RESTORE_STATS_COLLECTOR_H_
#define CHROME_BROWSER_SESSIONS_SESSION_RESTORE_STATS_COLLECTOR_H_

#include <stddef.h>
#include <map>
#include <memory>
#include <utility>
#include <vector>

#include "base/scoped_multi_source_observation.h"
#include "base/time/time.h"
#include "chrome/browser/sessions/session_restore.h"
#include "chrome/browser/sessions/session_restore_delegate.h"
#include "content/public/browser/render_widget_host.h"
#include "content/public/browser/render_widget_host_observer.h"

namespace content {
class WebContents;
}

// SessionRestoreStatsCollector observes SessionRestore events ands records UMA
// accordingly.
//
// TODO(chrisha): Many of these metrics don't make sense to collect in the
// presence of an unavailable network, or when tabs are closed during loading.
// Rethink the collection in these cases.
class SessionRestoreStatsCollector : public content::RenderWidgetHostObserver { … };

// An abstract reporting delegate is used as a testing seam.
class SessionRestoreStatsCollector::StatsReportingDelegate { … };

// The default reporting delegate, which reports statistics via UMA.
class SessionRestoreStatsCollector::UmaStatsReportingDelegate
    : public StatsReportingDelegate { … };

#endif  // CHROME_BROWSER_SESSIONS_SESSION_RESTORE_STATS_COLLECTOR_H_
chromium/chrome/browser/sessions/session_restore_stats_collector.h
