Pass GrRenderTargetContext's GrColorSpaceInfo to SkShader and SkColorFilter.

Also to SkColorTo(Premul|Unpremul)GrColor4f.

This can avoid cache lookups to find GrColorSpaceXforms as the xform pointer is stored in GrColorSpaceInfo after the first lookup.

Also uses GrColorSpaceInfo to construct GrTextUtils::Paint.

Bug: skia:
Change-Id: Idf19d512a60d2269e6921c7fb54d93aee499a70d
Reviewed-on: https://skia-review.googlesource.com/63660
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
37 files changed