gn format gn/gpu.gni

Change-Id: I16c392abe36d7aac7be2dee47116d873a8787afd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/281378
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
1 file changed