This is preperatory work for Cr- footers generation in git cl instead
of gnumbd.

BUG=642493

Change-Id: I4cfdd882fe6caa7972e51ffa81d335104ddb56dd
Reviewed-on: https://chromium-review.googlesource.com/414464
Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>