Broke after:
https://codereview.chromium.org/2757593002

NOTRY=true
TBR=yangguo@chromium.org
BUG=v8:6091

Change-Id: Id06860ad6519966a31d768ec9608b48786397e8f
Reviewed-on: https://chromium-review.googlesource.com/467209Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44371}