GitLab

- Introduce a "stopped" state when the printer is in an error state and
  is waiting for the user to fix the issue.
- For example, if a user prints to a printer that is out of paper, the
  ongoing print job will now update to reflect that status.
- Updated browser and unit tests to reflect this change.

Screenshot (full view): https://screenshot.googleplex.com/YPR4R40jNeV
Screenshot (collapsed view): https://screenshot.googleplex.com/A64F7TvHspR

Bug: 1093527
Test: BrowserTest and UnitTest
Change-Id: Ia72f23d67066d5640698163759ddf4151a59e07a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2342309
Commit-Queue: Jimmy Gong <jimmyxgong@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#796514}