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

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

BUG=837308
TBR=sergeyu@chromium.org

Change-Id: I26b8bcae9ec092131e8dfa41cb5225d28d8ebcf2
Reviewed-on: https://chromium-review.googlesource.com/c/1390416
Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618843}
32 files changed