This is needed by the upcoming DSLParser.
Change-Id: I54a0714e55feeb78894df766b14c795970f2c2d4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/411308
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
