Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/system/system_clock.cc

 // Copyright 2015 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.
 
 #include "chrome/browser/chromeos/system/system_clock.h"
 
+#include <memory>
+
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/ownership/owner_settings_service_chromeos.h"
 #include "chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/system/system_clock_observer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/pref_names.h"
 #include "chromeos/login/login_state.h"
@@ skipping 191 matching lines @@
   // This also works for enterprise-managed devices because they never have
   // a local owner.
   if (user_manager::UserManager::Get()->IsCurrentUserOwner())
     SetShouldUse24HourClock(ShouldUse24HourClock());
   FOR_EACH_OBSERVER(SystemClockObserver, observer_list_,
                     OnSystemClockChanged(this));
 }
 
 }  // namespace system
 }  // namespace chromeos