Use factories to avoid using (deprecated) path editing methods

Change-Id: Iae9944f6bba5a91c4643b3c3745c4c352bd07a17
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/312845
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
12 files changed