chromium/chrome/browser/upgrade_detector/upgrade_detector.h

// Copyright 2011 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_UPGRADE_DETECTOR_UPGRADE_DETECTOR_H_
#define CHROME_BROWSER_UPGRADE_DETECTOR_UPGRADE_DETECTOR_H_

#include <optional>
#include <string>

#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/sequence_checker.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "build/chromeos_buildflags.h"
#include "chrome/browser/upgrade_detector/upgrade_observer.h"
#include "components/prefs/pref_change_registrar.h"

class PrefRegistrySimple;
class UpgradeObserver;
namespace base {
class Clock;
class TickClock;
}

///////////////////////////////////////////////////////////////////////////////
// UpgradeDetector
//
// This class is a singleton class that monitors when an upgrade happens in the
// background. We basically ask Omaha what it thinks the latest version is and
// if our version is lower we send out a notification upon:
//   a) Detecting an upgrade and...
//   b) When we think the user should be notified about the upgrade.
// The latter happens much later, since we don't want to be too annoying.
// This class is not thread safe -- all access must take place on the UI thread.
//
class UpgradeDetector { … };

#endif  // CHROME_BROWSER_UPGRADE_DETECTOR_UPGRADE_DETECTOR_H_