Wide color support in GrGregionOp

Bug: skia:
Change-Id: I80cee450fdc2065b451ed7f7614f8a6f7aadd41e
Reviewed-on: https://skia-review.googlesource.com/c/179992
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed