Update GrMorphologyEffect to take an inputFP.

Change-Id: I97ae97519db798bd85eb6104d3950cea61e625d2
Bug: skia:10217
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/303477
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
1 file changed