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

chrome/browser/supervised_user/supervised_user_whitelist_service.cc

Index: chrome/browser/supervised_user/supervised_user_whitelist_service.cc
diff --git a/chrome/browser/supervised_user/supervised_user_whitelist_service.cc b/chrome/browser/supervised_user/supervised_user_whitelist_service.cc
index 91df9bf185b7d832d873f4b4486e66fb16922dd8..1ca14c19b6ea18cd2a1b9b30d0bcfbb10dc88b62 100644
--- a/chrome/browser/supervised_user/supervised_user_whitelist_service.cc
+++ b/chrome/browser/supervised_user/supervised_user_whitelist_service.cc
@@ -144,8 +144,8 @@ syncer::SyncMergeResult
 SupervisedUserWhitelistService::MergeDataAndStartSyncing(
     syncer::ModelType type,
     const syncer::SyncDataList& initial_sync_data,
-    scoped_ptr<syncer::SyncChangeProcessor> sync_processor,
-    scoped_ptr<syncer::SyncErrorFactory> error_handler) {
+    std::unique_ptr<syncer::SyncChangeProcessor> sync_processor,
+    std::unique_ptr<syncer::SyncErrorFactory> error_handler) {
   DCHECK_EQ(syncer::SUPERVISED_USER_WHITELISTS, type);
 
   syncer::SyncChangeList change_list;
@@ -280,7 +280,7 @@ void SupervisedUserWhitelistService::AddNewWhitelist(
   base::RecordAction(base::UserMetricsAction("ManagedUsers_Whitelist_Added"));
 
   RegisterWhitelist(whitelist.id(), whitelist.name(), FROM_SYNC);
-  scoped_ptr<base::DictionaryValue> dict(new base::DictionaryValue);
+  std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue);
   SetWhitelistProperties(dict.get(), whitelist);
   pref_dict->SetWithoutPathExpansion(whitelist.id(), dict.release());
 }