This trades memory and DDL-record time for GPU-flush time. That is, by tessellating in onPrePrepareDraws we will consume more memory (for the verts) and time at DDL-record time but, hopefully, less time when drawing the DDL.
Change-Id: I97dd1a00486c7a1da53add2ea203bf3f90c20162
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/250178
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>