Add SkBlurDrawLooper::Make(SkColor4f, SkColorSpace)

Bug: b/120904891

This will allow adding android.graphics.Paint#setShadowLayer(
    float radius, float dx, float dy, @ColorLong long shadowColor).

Change-Id: Ic9256b10c82b56847802f209cf82b4e5c07a9069
Reviewed-on: https://skia-review.googlesource.com/c/182762
Auto-Submit: Leon Scroggins <scroggo@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2 files changed