[graphite] Cleanup missed gpu_shared gn change.

Bug: skia:12466
Change-Id: I3072017577b18bf6f727af898c5caaad4ee359ac
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/467756
Auto-Submit: Greg Daniel <egdaniel@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
1 file changed