Reland "Check that mask to path fallback happens"

This is a reland of 9f85b5116e333a65ecfecb66adfdf7f72bb9e9ef

Original change's description:
> Check that mask to path fallback happens
> 
> BUG=chromium:876767
> 
> Change-Id: I6aadf329af836a1e03aa85b34a58830be00ff750
> Reviewed-on: https://skia-review.googlesource.com/150135
> Commit-Queue: Herb Derby <herb@google.com>
> Reviewed-by: Khusal Sagar <khushalsagar@chromium.org>

Bug: chromium:876767
Change-Id: I3fdf17ef3bd9c3f8b0e19d017f14114f3675dc12
Reviewed-on: https://skia-review.googlesource.com/150544
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Herb Derby <herb@google.com>
3 files changed