Fix bug with order-of-matrices in updatable drawVertices path

Change-Id: I2bfadbc281682d83ff1169767ef2693ee1fc1005
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/432158
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Brian Osman <brianosman@google.com>
4 files changed