This extension demonstrates how chrome.printing API can be used to
submit print jobs to the printers.
This extension will be used for external documentation as well.

Bug: 996785
Change-Id: Idb221bb99f2e157983edfb0356ae87ca655a9e12
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2050780Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Commit-Queue: Nikita Podguzov <nikitapodguzov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743464}