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

chrome/browser/supervised_user/legacy/supervised_user_shared_settings_update.cc

 // 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.
 
 #include "chrome/browser/supervised_user/legacy/supervised_user_shared_settings_update.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/values.h"
 #include "chrome/browser/supervised_user/legacy/supervised_user_shared_settings_service.h"
 
 SupervisedUserSharedSettingsUpdate::SupervisedUserSharedSettingsUpdate(
     SupervisedUserSharedSettingsService* service,
     const std::string& su_id,
     const std::string& key,
-    scoped_ptr<base::Value> value,
+    std::unique_ptr<base::Value> value,
     const base::Callback<void(bool)>& success_callback)
     : service_(service),
       su_id_(su_id),
       key_(key),
       value_(std::move(value)),
       callback_(success_callback) {
   service->SetValueInternal(su_id, key, *value_, false);
   subscription_ = service->Subscribe(
       base::Bind(&SupervisedUserSharedSettingsUpdate::OnSettingChanged,
                  base::Unretained(this)));
 }
 
 SupervisedUserSharedSettingsUpdate::~SupervisedUserSharedSettingsUpdate() {}
 
 void SupervisedUserSharedSettingsUpdate::OnSettingChanged(
     const std::string& su_id, const std::string& key) {
   if (su_id != su_id_)
     return;
 
   if (key != key_)
     return;
 
   const base::Value* value = service_->GetValue(su_id, key);
   callback_.Run(value->Equals(value_.get()));
 }