Update generated proto

Includes http://cl/125388077 (internal only).

TBR=tandrii@chromium.org
BUG=579589

Review-Url: https://codereview.chromium.org/2084423002
Cr-Mirrored-From: https://chromium.googlesource.com/infra/infra
Cr-Mirrored-Commit: ff965758cbfee4d78288fcce2fd0878503e32e4e
1 file changed