Don't assert coverage counting isn't blacklisted when driver workarounds are disabled

Bug: skia:7617
Change-Id: I53a49e7d15fe6a02d57155d50f486d7ab1a729f3
Reviewed-on: https://skia-review.googlesource.com/106920
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed