Add |printing::features::kCupsIppPrintingBackend| and the corresponding
UI in chrome://flags for switching printing backends on macOS.
The existing CUPS backend calls the deprecated PPD API. In a future CL,
the switch will allow use of the CUPS IPP backend, which uses an
up-to-date API for fetching printer attributes and managing printers.
The flag does not do anything yet.
Bug: 226176
Change-Id: Ifbacfbd1872eb7c47b3130694de920a94f42fc15
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2063220
Commit-Queue: Daniel Hosseinian <dhoss@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Sean Kau <skau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#750018}
159cb3d62a