Move GrAALinearizingConvexPathRenderer off GrLegacyMeshDrawOp

Change-Id: I7d3c4053d4a833215371d77de683964cef317a5c
Reviewed-on: https://skia-review.googlesource.com/20460
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2 files changed