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

chrome/browser/chromeos/power/power_prefs.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_CHROMEOS_POWER_POWER_PREFS_H_
 #define CHROME_BROWSER_CHROMEOS_POWER_POWER_PREFS_H_
 
+#include <memory>
+
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class PrefChangeRegistrar;
 class Profile;
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
@@ skipping 30 matching lines @@
   // the login profile.
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
   void SetProfile(Profile* profile);
 
   PowerPolicyController* power_policy_controller_;  // Not owned.
 
   content::NotificationRegistrar notification_registrar_;
 
   Profile* profile_;  // Not owned.
-  scoped_ptr<PrefChangeRegistrar> pref_change_registrar_;
+  std::unique_ptr<PrefChangeRegistrar> pref_change_registrar_;
 
   // True while the screen is locked (but not while the login screen is shown).
   bool screen_is_locked_;
 
   DISALLOW_COPY_AND_ASSIGN(PowerPrefs);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_POWER_POWER_PREFS_H_