Group #ifdef routines together in TransformedMaskSubRun
Group #ifdef routines together in TransformedMaskSubRun

Change-Id: I4bff484b2404083c35ec2fe9375ff5066500275b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/573014
Commit-Queue: Herb Derby <9e12a3d2bbf73546e47cc9958f6ba8f3215b7eaf@google.com>
Reviewed-by: Robert Phillips <95e8ac5504948c7bf91b22c16a8dbb7ae7c66bfd@google.com>

google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia