It was shipped in Chrome 63.

Bug: v8:5967
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I1ade30d7ba3cf012f4d0c898f868192972aac726
Reviewed-on: https://chromium-review.googlesource.com/1085289
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53505}