Make convex poly effect GM use a non-legacy GrMeshDrawOp

Change-Id: I24806e9bc12206d2c1e29a1aec33aabad0f9c91b
Reviewed-on: https://skia-review.googlesource.com/23581
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed