Mac slight hinting to be normal instead of none.

This is more in line with what the DirectWrite backend does, and is also
more compatible when Mac typefaces are mixed with FreeType typefaces.

Change-Id: I5dd351b452e8c7c822f71290b7a62312809bd964
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212417
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed