[svg] Refactor <path> to use new parsing

Change-Id: Ib33111e1b00f05d32f8c6add512c38b5a6197af8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/367884
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
5 files changed