check if we can use legacy blits depends on https://skia-review.googlesource.com/c/skia/+/196647 Bug: skia: Change-Id: I85ea7aac34558838d120c2c02abaaeebd77d8b8a Reviewed-on: https://skia-review.googlesource.com/c/skia/+/196651 Reviewed-by: Mike Klein <mtklein@google.com> Commit-Queue: Mike Reed <reed@google.com>