Support strict constraints for bulk texture sets

Change-Id: I67f2f60d4a8913c7ae18bfbea68825294b693562
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/205824
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
5 files changed