Add USB printer support for CrOS printer status requests

For USB printers,the printer status in print preview will reflect if
the USB printer is currently connected or disconnected to the device.
The IPP printer status request mechanism does not work for USB
connected printers.

A later enhancement will add ability to detect when printers are
connected or disconnected to the device while print preview is open and
update the status accordingly.

Bug: 1059607
Change-Id: Ia3835dac5d080d98d3834c76a1ede5cb0397601b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2249384


Reviewed-by: Bailey Berro <baileyberro@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Commit-Queue: Gavin Williams <gavinwill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#780844}