System tests updated to pass. I will cleanup the code in a
separate CL removing the old code.

Bug: v8:6917
Change-Id: Ie49efe06c43faade846e322b35c4a2068137a88b
Reviewed-on: https://chromium-review.googlesource.com/897565Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michał Majewski <majeski@google.com>
Cr-Commit-Position: refs/heads/master@{#51025}