This is a reland of 8f4407fb.

Original change's description:
> [test] Keep the order of variants
> 
> Bug: v8:6917
> Change-Id: I7e04255649f62a28f0ed07ccb4fbaf4825498bf6
> Reviewed-on: https://chromium-review.googlesource.com/886841
> Commit-Queue: Michał Majewski <majeski@google.com>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#50874}

Bug: v8:6917
Change-Id: I9d4c617ccec6db8929af3095f2f27d8964c5d6b8
Reviewed-on: https://chromium-review.googlesource.com/888582Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michał Majewski <majeski@google.com>
Cr-Commit-Position: refs/heads/master@{#50901}