BUG=v8:8157

Change-Id: I66bac3897eaad640b5723cdd0ec900e40cce1214
Reviewed-on: https://chromium-review.googlesource.com/1226917
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Rodolph Perfetta <rodolph.perfetta@arm.com>
Cr-Commit-Position: refs/heads/master@{#55988}