Add file to public.bzl

Change-Id: Idb526ccbb6d552b418c569a63bd3eed83e975ab1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/540916
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
1 file changed