Revert "Check the boundary while cumulating deltas in a mask"

This reverts commit d9779bcf93c2e11699230a54214309732b9161a7.

Reason for revert: breaks gold

Original change's description:
> Check the boundary while cumulating deltas in a mask
> 
> Without the fix,
> 
> ./out/Debug/dm --config t8888 -m complexclip_bw
> 
> will trigger the assert.
> 
> Note that this boundary check is already in place when deltas are
> cumulated without using a mask.
> 
> Bug: skia:
> Change-Id: I68bfe2b7196d440743d3a7535d097bb8ec7689c3
> Reviewed-on: https://skia-review.googlesource.com/113210
> Commit-Queue: Yuqian Li <liyuqian@google.com>
> Reviewed-by: Cary Clark <caryclark@skia.org>

TBR=liyuqian@google.com,reed@google.com,caryclark@skia.org

Change-Id: Ice0e3618b02ef48b0f2a9f0662a12f76078e984a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/113170
Reviewed-by: Yuqian Li <liyuqian@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>
1 file changed