Fix gn for DSLWrapper.h
Fix gn for DSLWrapper.h

Change-Id: Id6e4d82d96f6393c70866bcc8430d4f088d2ad2a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/541066
Reviewed-by: Brian Osman <794c0b5534edf5601d88e1d41975d0262da12894@google.com>
Reviewed-by: John Stiles <f4fcf42d3bb5924557f1eeb3be66747535e585da@google.com>
Commit-Queue: Herb Derby <9e12a3d2bbf73546e47cc9958f6ba8f3215b7eaf@google.com>

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