Use base::size rather than arraysize in ash/.

This is purely a mechanical change; there is no intended behavior change.

BUG=837308
TBR=jamescook@chromium.org

Change-Id: I5f42334a368d102094d6215389d1ffba4a764d6e
Reviewed-on: https://chromium-review.googlesource.com/c/1390907
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618893}
23 files changed