R=jgruber@chromium.org

Bug: v8:6422
Change-Id: Ib1075259325627451060b3a0a41cad5c917dc30e
Reviewed-on: https://chromium-review.googlesource.com/650246Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47814}