[protosync] Server-side -> client

Sync server-side changes from cl/351503355.

Change-Id: I21d52d22c05b4cb47761302b040288dc2f351ba2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2648106
Auto-Submit: Jit Yao Yap <jityao@google.com>
Reviewed-by: Alexander Hendrich <hendrich@chromium.org>
Commit-Queue: Alexander Hendrich <hendrich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#847125}
GitOrigin-RevId: 970ff1d1425c15578f774d8e1517a8a060ffb699
1 file changed