GitLab

Extend the prohibition of logging PII to user data in general and add
some examples.

Bug: none
Change-Id: I6fc97b2e3aaf404ba5e5622037a6c748a4e470ca
Reviewed-on: https://chromium-review.googlesource.com/c/1335571Reviewed-by: Richard Coles <torne@chromium.org>
Commit-Queue: Thiemo Nagel <tnagel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608423}