R=jarin@chromium.org

Bug: v8:6791
Change-Id: I8519d0a9afdb457398ff428d0d3ec0734306052b
Reviewed-on: https://chromium-review.googlesource.com/765947Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49342}