Misko Hevery 2a45b932e2 build: fix broken build (#38274)
```
export const __core_private_testing_placeholder__ = '';
```
This API should be removed. But doing so seems to break `google3` and
so it requires a bit of investigation. A work around is to mark it as
`@codeGenApi` for now and investigate later.

PR Close #38274
2020-07-28 12:30:59 -07:00
..
2020-07-28 12:30:59 -07:00