We don't need to pay the cost of going to JS to simply stamp out a
new object.

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I8942771ff9c19dff1908243fd6d3bd701d3fb5a3
Reviewed-on: https://chromium-review.googlesource.com/897803
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51267}