Subpixel anti-aliasing in FreeType 2.8.1+

FreeType 2.8.1 and later always provide some form of subpixel
anti-aliasing.

Bug: skia:10950,skia:6663
Change-Id: I666cc942e73b73073cdabf900c25faa10d9aaf0f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/339861
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed