Use validating buffer for skpath

Bug: skia:
Change-Id: I92191e60c874ff123b7d839f5c65f32e180f69eb
Reviewed-on: https://skia-review.googlesource.com/69080
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
1 file changed