Allow BF and BRD clients to request an output color space

Bug: skia:
Change-Id: I0f0d3bfdd5c47544ab71167fd7984ee8e8ac5903
Reviewed-on: https://skia-review.googlesource.com/11601
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
6 files changed