Bring cast_logs.proto up-to-date with Google3

Bug: None
Test: None
Change-Id: I0667d83cf10cf309b42105dc622a75ec608f437a
Reviewed-on: https://chromium-review.googlesource.com/c/1407260
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Commit-Queue: Manit Limlamai <limlam@google.com>
Cr-Commit-Position: refs/heads/master@{#622681}
2 files changed