firmware: add code_coverage to proto.

BUG=b:179680444
TEST=generate

Change-Id: Ic748946072613d4e5930242a1b8cca54f099bef8
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2698243
Auto-Submit: LaMont Jones <lamontjones@chromium.org>
Reviewed-by: George Engelbrecht <engeg@google.com>
Commit-Queue: LaMont Jones <lamontjones@chromium.org>
2 files changed