R=jgruber@chromium.org

Bug: v8:178
Change-Id: Ie2279c8a1bb50d01186dbd9dd29145bca9aeaf6f
Reviewed-on: https://chromium-review.googlesource.com/972983
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52106}