Reland "Don't let neighboring radii in GrAAFillRRectOp get too close"

This reverts commit 1dced8648159c267a847f598b8136b6c23df4491.

Reason for revert: prolly not the problem for the roll

Original change's description:
> Revert "Don't let neighboring radii in GrAAFillRRectOp get too close"
> 
> This reverts commit 778edc883b36995e8c0780b1dc851347c9e24699.
> 
> Reason for revert: speculative, to see if chrome rolls
> 
> Original change's description:
> > Don't let neighboring radii in GrAAFillRRectOp get too close
> > 
> > Since each corner uses a different reference point, it's possible that
> > FP rounding can cause the edges of very close radii on a common edge
> > to accidentally overlap. This can cause a pixel to be drawn/blended
> > more than once. This CL addresses the issue by not allowing
> > neighboring radii on a common edge to get closer than 1/16 pixel from
> > one another.
> > 
> > Bug: skia:8562
> > Change-Id: Ifda97c9a4c3973405f86f7fc6846a4073b3ab581
> > Reviewed-on: https://skia-review.googlesource.com/c/173036
> > Commit-Queue: Chris Dalton <csmartdalton@google.com>
> > Reviewed-by: Jim Van Verth <jvanverth@google.com>
> 
> TBR=jvanverth@google.com,csmartdalton@google.com
> 
> Change-Id: Ica14341e38bc0da649f0f0ade70692b0372f1c78
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: skia:8562
> Reviewed-on: https://skia-review.googlesource.com/c/173160
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=jvanverth@google.com,csmartdalton@google.com,reed@google.com

Change-Id: I94f63e0e221b3e4340fc850a631a884738c479a7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:8562
Reviewed-on: https://skia-review.googlesource.com/c/173161
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed