use strokeandfill patheffect, and fix it

Similar to our stroker, I try to detect when to reverse the fill.

Change-Id: I3099f009dd78dc6e4ffd295e13183c85e0990761
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/291179
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
3 files changed