GitLab

This test was passing accidentally due to an issue with autofocus. The
print-preview-user-manager should be necessary to make the test pass.
Add it to the test.

Bug: 979603
Change-Id: I44065fdfcd28ad69b46373805f67f37c6a16799c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1704734
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#678954}