add alternative setters for hinting

Bug: skia:2664
Change-Id: I77248d9012e44d6ed5de92731fb0769c61fd7298
Reviewed-on: https://skia-review.googlesource.com/c/168278
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
4 files changed