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

chrome/browser/supervised_user/legacy/supervised_user_pref_mapping_service.h

 // Copyright 2014 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_SUPERVISED_USER_LEGACY_SUPERVISED_USER_PREF_MAPPING_SERVICE_H_
 #define CHROME_BROWSER_SUPERVISED_USER_LEGACY_SUPERVISED_USER_PREF_MAPPING_SERVICE_H_
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/callback_list.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/supervised_user/supervised_users.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/prefs/pref_change_registrar.h"
 
 class PrefService;
 class SupervisedUserSharedSettingsService;
 
 // SupervisedUserPrefMappingService maps shared supervised user settings to user
 // preferences. When a shared supervised user setting is updated via sync, the
@@ skipping 20 matching lines @@
   // sync data. Updates the corresponding user pref.
   void OnSharedSettingChanged(const std::string& su_id, const std::string& key);
 
  private:
   // Returns the current chrome avatar index that is stored as a supervised user
   // shared setting, or -1 if no avatar index is stored.
   int GetChromeAvatarIndex();
 
   PrefService* prefs_;
   SupervisedUserSharedSettingsService* shared_settings_;
-  scoped_ptr<CallbackList::Subscription> subscription_;
+  std::unique_ptr<CallbackList::Subscription> subscription_;
   std::string supervised_user_id_;
   PrefChangeRegistrar pref_change_registrar_;
   base::WeakPtrFactory<SupervisedUserPrefMappingService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserPrefMappingService);
 };
 
 #endif  // CHROME_BROWSER_SUPERVISED_USER_LEGACY_SUPERVISED_USER_PREF_MAPPING_SERVICE_H_