BUG=v8:6749

R=titzer@chromium.org

Change-Id: I4ac2ac8d8ca98d71dbc5a86c3cca268cd836997c
Reviewed-on: https://chromium-review.googlesource.com/645146
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47837}