GitLab

zx::channel::read() now has the correct parameter order, so migrate to
that, to allow rea2() to be removed.

TBR=kmarshall

Bug: 953523
Change-Id: I622531739609c0dfb935d44416687d7eca9a9567
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1582541Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Auto-Submit: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653636}