more setters for SkFont

Bug: skia:2664
Change-Id: Id5a09f8fd6bba99f77b508aed58147b34c02dbb2
Reviewed-on: https://skia-review.googlesource.com/c/164694
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2 files changed