GitLab

The version of GetColorModelForMode() that ChromeOS uses will be used
by macOS. Rename it to GetIppColorModelForMode() and move it to
print_settings.h. Meanwhile, add some simple tests.

Bug: 1106437
Change-Id: Ic01d1cf242c6e77774d247253f6cd912c2566f5b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2303855
Commit-Queue: Daniel Hosseinian <dhoss@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#789717}