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- PrinterErrorCode is an enum that details the error that the printer
  reported when a print job either completes successfully or ran into an
  error with printing the print job.
- This enum is also added to PrintingMetrics API.
- Existing stored print jobs will not have this field available as
  we previously were not storing this information to the local database.

Bug: 1053704
Test: unit_tests
Change-Id: I6e851bd1def6ae522fc413d8df1ccbe53d421a98
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2207778
Commit-Queue: jimmy gong <jimmyxgong@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: Nikita Podguzov <nikitapodguzov@chromium.org>
Reviewed-by: Bailey Berro <baileyberro@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776788}