GitLab

Add a deprecation warning message for Cloud and Privet printers under
the destination select.

Note: This change is only for non-CrOS desktop. CrOS changes will be
applied in a chained CL.

Screenshot of change: https://imgur.com/cZqYwba

Bug: 1112581
Change-Id: I2057cab0daa8d6f169ae6255172970a84b2803f0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2353731
Commit-Queue: Daniel Hosseinian <dhoss@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799487}