BUG=chromium:1076569

Change-Id: I178e12e20f48dc4216c3f108352425e0aa91047f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2185130
Auto-Submit: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67628}