Update SkSRGBGammaColorFilter to accept an input fragment processor.

Change-Id: Ib9a61ffba5495c67652662a0d15fafc8f1f6ff1f
Bug: skia:10217
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/299577
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
1 file changed