Always trigger DMSAA when there is stencil

This ensures stencil contents get properly preserved between render
passes, if needed.

Bug: skia:11396
Change-Id: Ib4219a5b4cbc7015ec16bb0294e5836c48ac29e4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/415357
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
1 file changed