Summary: Changelog: [Internal][Fixed] - When we close performance loggers (D23845307 (https://github.com/facebook/react-native/commit/aebb97b9c64a8d84cf852ae8efc5ef28b36da610)) we cannot rely that a timespan/point/extra will be in perf logger. Update types to reflect that.
Reviewed By: rubennorte
Differential Revision: D23907741
fbshipit-source-id: 63673aa69cd8c76253e4fee3463e37c86265cf7b