Revert "Fix public.bzl"

This reverts commit e064c4c804315b96c2de33c0ac3dbfa4d44e56b8.

Reason for revert: Original CL is being reverted

Original change's description:
> Fix public.bzl
>
> Follow-up to https://skia-review.googlesource.com/c/skia/+/537876
>
> Change-Id: I414c1e9860848e94597abb87b31ad7c3c297b8c2
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/540739
> Reviewed-by: Jorge Betancourt <jmbetancourt@google.com>

Change-Id: I484b8230a5813d3a087164071b0a5765b4e96423
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/540859
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>