R=titzer@chromium.org

Change-Id: I45693c7bc7600dde4d01d1130f3be1641c5e9250
Reviewed-on: https://chromium-review.googlesource.com/c/1430102Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59034}