Reland "Add target SkColorSpace to SkImage_GpuYUVA."

This is a reland of 2232b9ed3998110ed613ae01f3637d2ce7317f05

Original change's description:
> Add target SkColorSpace to SkImage_GpuYUVA.
>
> Bug: skia:8868
> Change-Id: I91f58bf88aec14c17ea904adca792e20099c36eb
> Reviewed-on: https://skia-review.googlesource.com/c/182816
> Commit-Queue: Jim Van Verth <jvanverth@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>

Bug: skia:8668
Change-Id: If41ba39e63b348422afaf6910b03405ef1c2be12
Reviewed-on: https://skia-review.googlesource.com/c/183380
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
11 files changed