Use std::unique_ptr for base::DictionaryValue and base::ListValue's internal store.

net/http/http_server_properties_manager.cc

Index: net/http/http_server_properties_manager.cc
diff --git a/net/http/http_server_properties_manager.cc b/net/http/http_server_properties_manager.cc
index 67dd80e8c6c74c3a2386a7d10adae734fcdd227e..35fcea868776e453106e4ec7c5ae0eb37665a6fe 100644
--- a/net/http/http_server_properties_manager.cc
+++ b/net/http/http_server_properties_manager.cc
@@ -716,8 +716,7 @@ bool HttpServerPropertiesManager::AddToAlternativeServiceMap(
   }
 
   AlternativeServiceInfoVector alternative_service_info_vector;
-  for (const base::Value* alternative_service_list_item :
-       *alternative_service_list) {
+  for (const auto& alternative_service_list_item : *alternative_service_list) {
     const base::DictionaryValue* alternative_service_dict;
     if (!alternative_service_list_item->GetAsDictionary(
             &alternative_service_dict))