Add diagnostics to catch commits of URLs in incompatible processes.

These should be removed once we have some data indicating how it is
occurring in practice.

BUG=931895

Change-Id: Ic8977b194892328a32d1db6f4492f9bb84938ba4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1524835
Reviewed-by: Nasko Oskov <nasko@chromium.org>
Commit-Queue: Charlie Reis <creis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#641079}
2 files changed