This reverts commit f248b35d75.
Reason for revert: adding guard around aa disabling
Original change's description:
> Revert "Downgrade giant clip ops' AA in SkRasterClipStack"
>
> This reverts commit 3a15110898.
>
> Reason for revert: needs a build flag to roll into g3
>
> Original change's description:
> > Downgrade giant clip ops' AA in SkRasterClipStack
> >
> > Anti-aliased path rendering in the software backend has an internal
> > limit of +/-16384 per coordinate. Path rendering is triggered by draws
> > and clips. Draws are tiled at a high-level before entering the blitter,
> > so this limit will not be encountered. Coverage mask generation for
> > AA clips, however, is not tiled. Normally, it relies on the path being
> > clipped by the underlying device dimensions. When the device itself
> > is larger than 16384, then the clip ops can reach the blitter and
> > exceed the internal limit.
> >
> > When this happens, SkScan::FillPath adds a hard rect clip, which is
> > what caused the mis-applied clip seen in the attached bug report.
> >
> > This CL detects when the canvas/device dimensions are large enough to
> > cause this problem and forcefully disables anti-aliasing for all clips.
> > This shouldn't really be a visual behavior change since the blitter
> > already was downgrading from AA. The main advantage is that the clip
> > stack will use SkRegion for BW clips exclusively instead of switching
> > to use SkAAClip.
> >
> > It was decided to handle this at the clip stack level vs. a per-op
> > decision since a non-AA large clip element used with SkAAClip (
> > triggered by a smaller non-problematic op) would still show the bug.
> >
> > This is only a mitigation. The long-term solution is to use tiling for
> > clipping as well as drawing (possibly by requiring the tiling to be
> > handled by clients, with surface creation failing at sizes > 16k).
> >
> > Bug: chromium:1240718, skia:7998
> > Change-Id: I1f4cae540bec4d44c6e1d8032ded9e95ff32b82f
> > Reviewed-on: https://skia-review.googlesource.com/c/skia/+/441456
> > Reviewed-by: Mike Reed <reed@google.com>
> > Commit-Queue: Michael Ludwig <michaelludwig@google.com>
>
> TBR=reed@google.com,michaelludwig@google.com,skcq-be@skia-corp.google.com.iam.gserviceaccount.com
>
> Change-Id: I6008cef5f7df48f27497e2ec75db14584c2acb68
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: chromium:1240718, skia:7998
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/441520
> Reviewed-by: Michael Ludwig <michaelludwig@google.com>
> Commit-Queue: Michael Ludwig <michaelludwig@google.com>
# Not skipping CQ checks because this is a reland.
Bug: chromium:1240718, skia:7998
Change-Id: Ie152db8dd95b1f40cbfa26c1c4543601f3f53754
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/441497
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
53009db137