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

chrome/browser/supervised_user/legacy/supervised_user_sync_service.cc

Index: chrome/browser/supervised_user/legacy/supervised_user_sync_service.cc
diff --git a/chrome/browser/supervised_user/legacy/supervised_user_sync_service.cc b/chrome/browser/supervised_user/legacy/supervised_user_sync_service.cc
index 51c3ba5ac6f19db1aec9c8c361b5d7abe5c611d0..630b163238cf8b8ad0e30ee6f331a0d84e0c7faa 100644
--- a/chrome/browser/supervised_user/legacy/supervised_user_sync_service.cc
+++ b/chrome/browser/supervised_user/legacy/supervised_user_sync_service.cc
@@ -207,13 +207,13 @@ void SupervisedUserSyncService::RemoveObserver(
   observers_.RemoveObserver(observer);
 }
 
-scoped_ptr<base::DictionaryValue> SupervisedUserSyncService::CreateDictionary(
-    const std::string& name,
-    const std::string& master_key,
-    const std::string& signature_key,
-    const std::string& encryption_key,
-    int avatar_index) {
-  scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
+std::unique_ptr<base::DictionaryValue>
+SupervisedUserSyncService::CreateDictionary(const std::string& name,
+                                            const std::string& master_key,
+                                            const std::string& signature_key,
+                                            const std::string& encryption_key,
+                                            int avatar_index) {
+  std::unique_ptr<base::DictionaryValue> result(new base::DictionaryValue());
   result->SetString(kName, name);
   result->SetString(kMasterKey, master_key);
   result->SetString(kPasswordSignatureKey, signature_key);
@@ -274,7 +274,7 @@ void SupervisedUserSyncService::UpdateSupervisedUserImpl(
     bool add_user) {
   DictionaryPrefUpdate update(prefs_, prefs::kSupervisedUsers);
   base::DictionaryValue* dict = update.Get();
-  scoped_ptr<base::DictionaryValue> value = CreateDictionary(
+  std::unique_ptr<base::DictionaryValue> value = CreateDictionary(
       name, master_key, signature_key, encryption_key, avatar_index);
 
   DCHECK_EQ(add_user, !dict->HasKey(id));
@@ -407,8 +407,8 @@ void SupervisedUserSyncService::Shutdown() {
 SyncMergeResult SupervisedUserSyncService::MergeDataAndStartSyncing(
     ModelType type,
     const SyncDataList& initial_sync_data,
-    scoped_ptr<SyncChangeProcessor> sync_processor,
-    scoped_ptr<SyncErrorFactory> error_handler) {
+    std::unique_ptr<SyncChangeProcessor> sync_processor,
+    std::unique_ptr<SyncErrorFactory> error_handler) {
   DCHECK_EQ(SUPERVISED_USERS, type);
   sync_processor_ = std::move(sync_processor);
   error_handler_ = std::move(error_handler);