Allow configuration of request safety check.

Bug: 332358363

Change-Id: If89401572762933eee9455896ce592cddb0db84c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5425382


Reviewed-by: Sophie Chang <sophiechang@chromium.org>
Commit-Queue: Steven Holte <holte@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1283474}