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

chrome/browser/supervised_user/supervised_user_pref_store.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/supervised_user_pref_store.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 94 matching lines @@
 
 bool SupervisedUserPrefStore::IsInitializationComplete() const {
   return !!prefs_;
 }
 
 SupervisedUserPrefStore::~SupervisedUserPrefStore() {
 }
 
 void SupervisedUserPrefStore::OnNewSettingsAvailable(
     const base::DictionaryValue* settings) {
-  scoped_ptr<PrefValueMap> old_prefs = std::move(prefs_);
+  std::unique_ptr<PrefValueMap> old_prefs = std::move(prefs_);
   prefs_.reset(new PrefValueMap);
   if (settings) {
     // Set hardcoded prefs and defaults.
     prefs_->SetBoolean(prefs::kAllowDeletingBrowserHistory, false);
     prefs_->SetInteger(prefs::kDefaultSupervisedUserFilteringBehavior,
                        SupervisedUserURLFilter::ALLOW);
     prefs_->SetBoolean(prefs::kForceGoogleSafeSearch, true);
     prefs_->SetBoolean(prefs::kForceYouTubeSafetyMode, true);
     prefs_->SetBoolean(prefs::kHideWebStoreIcon, true);
     prefs_->SetInteger(prefs::kIncognitoModeAvailability,
@@ skipping 42 matching lines @@
 }
 
 // Callback to unsubscribe from the supervised user settings service.
 void SupervisedUserPrefStore::Observe(
     int type,
     const content::NotificationSource& src,
     const content::NotificationDetails& details) {
   DCHECK_EQ(chrome::NOTIFICATION_PROFILE_DESTROYED, type);
   user_settings_subscription_.reset();
 }