[graphite] Add unit test for makeColorTypeAndColorSpace

Bug: b/239959460
Change-Id: Ifccb60b5ba63f5c8062a09fe6521d4955e2bc31a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/633056
Reviewed-by: James Godfrey-Kittle <jamesgk@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed