chrome/browser/network_time/network_time_service.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_NETWORK_TIME_NETWORK_TIME_SERVICE_H_
   6 #define CHROME_BROWSER_NETWORK_TIME_NETWORK_TIME_SERVICE_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/time/time.h"
  10 #include "components/browser_context_keyed_service/browser_context_keyed_service.h"
  11
  12 class NetworkTimeTracker;
  13 class Profile;
  14
  15 namespace user_prefs {
  16 class PrefRegistrySyncable;
  17 }
  18
  19 // NetworkTimeService can convert local time to network time.
  20 class NetworkTimeService : public BrowserContextKeyedService {
  21  public:
  22   explicit NetworkTimeService(Profile* profile);
  23   virtual ~NetworkTimeService();
  24
  25   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
  26
  27   // Return network time corresponding to |local_time| if possible. Return
  28   // |local_time| otherwise.
  29   base::Time GetNetworkTime(const base::Time& local_time);
  30
  31   // Shortcut to get current time.
  32   base::Time GetNetworkNow();
  33
  34   virtual void Shutdown() OVERRIDE;
  35
  36  private:
  37   Profile* profile_;
  38   scoped_ptr<NetworkTimeTracker> network_time_tracker_;
  39 };
  40
  41 #endif  // CHROME_BROWSER_NETWORK_TIME_NETWORK_TIME_SERVICE_H_