add SkPath::shrinkToFit

Bug: skia:
Change-Id: Ief647bcea53c0aeae2750473288bd31f16521772
Reviewed-on: https://skia-review.googlesource.com/150967
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
4 files changed