Also, fix one spec violation that checked for Name, but should just
check for Strings.

Bug: v8:8032, v8:7684
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ib9ffa48b86b4da6e881eeec4eb24ec623345aae4
Reviewed-on: https://chromium-review.googlesource.com/1167042Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54987}