Update SkComposeColorFilter to support an input FP.

Change-Id: Idbc4a0786630782cfac9a39b41770c5ef85f3e6d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/298754
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
1 file changed