Use base::size rather than arraysize in media/ ipc.

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

BUG=837308

Change-Id: I0b636be13abe367abb6bfab4b581296f38d6df43
Reviewed-on: https://chromium-review.googlesource.com/c/1390722
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618971}
3 files changed