sort, dedup skia_public_includes

Change-Id: Ic3ce410daf9e5923396019d65f922c8b67d589b0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209873
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
1 file changed