Revert "Call blitFatAntiRect to avoid overhead in MaskAdditiveBlitter"

This reverts commit 6d1aaca8276ff4ae2e10870f7e2c3222907cc4aa.

Reason for revert: speculative revert for Google3 diff.

Original change's description:
> Call blitFatAntiRect to avoid overhead in MaskAdditiveBlitter
> 
> This results in 25% (720ns vs 560ns) speedup for
> path_fill_small_rect bench in 8888 config. Some skps have a lot of stroked
> horizontal/vertical lines (e.g., bar charts) so this improvement could
> have a great impact there. For example, cereal converts Microsoft word docx
> to PNGs on server and the sample docx has a big bar chart. That inspired
> this improvement.
> 
> Bug: skia:
> Change-Id: Icf96c966edf87427b3d1f53da09a49930eda2ac1
> Reviewed-on: https://skia-review.googlesource.com/46584
> Commit-Queue: Yuqian Li <liyuqian@google.com>
> Reviewed-by: Mike Klein <mtklein@google.com>

TBR=mtklein@google.com,herb@google.com,liyuqian@google.com,reed@google.com

Change-Id: Ia30df0be874749c5f8ee0138f3d7d961d5bc3fcf
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/48220
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
5 files changed