GitLab

This situation may come up if policy was changed after printer was
selected. We reject printing job since silently omitting username and
filename could be confusing.

Bug: 1042798
Change-Id: Iba385503d8f7e960291728d6515ca7c236220847
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2004992Reviewed-by: Sean Kau <skau@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#734128}