Add getTypefaceOrDefault and refTypefaceOrDefault

* Remove GetTypefaceOrDefault from SkPaint and SkFont
* Remove RefTypefaceOrDefault from SkPaint and SkFont

Change-Id: I04ae777142c2bdec849508b611b844418bbaedff
Reviewed-on: https://skia-review.googlesource.com/c/185781
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Herb Derby <herb@google.com>
22 files changed