Rewrite matrix comparisons to work around Adreno bug.

Change-Id: I2f245892e12416decd4f0aee491f16fb4040ffca
Bug: skia:11308
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/411036
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
5 files changed