network_time: Remove NetworkTimeService

chrome/browser/network_time/network_time_service.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_NETWORK_TIME_NETWORK_TIME_SERVICE_H_
-#define CHROME_BROWSER_NETWORK_TIME_NETWORK_TIME_SERVICE_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-#include "components/keyed_service/core/keyed_service.h"
-
-class Profile;
-
-namespace user_prefs {
-class PrefRegistrySyncable;
-}
-
-// NetworkTimeService can convert local time to network time.
-class NetworkTimeService : public KeyedService {
- public:
-  explicit NetworkTimeService(Profile* profile);
-  virtual ~NetworkTimeService();
-
-  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
-
-  // Return network time corresponding to |local_time| if possible. Return
-  // |local_time| otherwise.
-  base::Time GetNetworkTime(const base::Time& local_time);
-
-  // Shortcut to get current time.
-  base::Time GetNetworkNow();
-
-  virtual void Shutdown() OVERRIDE;
-
- private:
-  Profile* profile_;
-};
-
-#endif  // CHROME_BROWSER_NETWORK_TIME_NETWORK_TIME_SERVICE_H_