Migrate to using SkPathBuilder

Change-Id: I86a75670d7b919313747175ca3e49ef7472061fd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/310977
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
12 files changed