This is in anticipation of more complex type names coming from the new
proposals.

Change-Id: I1e5b8bd8c5b3edb5b603d36f6c5e9a787ebad504
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2243215
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68370}