Use base::size and std::extent rather than arraysize in media/.

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

BUG=837308
TBR=dalecurtis

Change-Id: Icc38b99f1ef5af58ce66ebeef1603e76cd3b6f78
Reviewed-on: https://chromium-review.googlesource.com/c/1391711
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619169}
10 files changed