Remove texColorSpace output param from various producer APIs

Just expose colorSpace on the GrTextureProducer, and if a client needs
it, they can get it from there.

Bug: skia:
Change-Id: I5134b1c9b2780274f3d6571d9fe8cd2a6b6ce7e9
Reviewed-on: https://skia-review.googlesource.com/c/163888
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
23 files changed