R=jarin@chromium.org

Bug: v8:6791
Change-Id: I29249640c4612421cd3bf938c465fc823aaa916d
Reviewed-on: https://chromium-review.googlesource.com/765967Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49360}