Revert "Move from SkChunkAlloc to SkArenaAlloc for PathOps"

This reverts commit 38c60180241e335e368fdadbf7856aff114ff668.

Reason for revert: breaking ASAN run in TAP build

Original change's description:
> Move from SkChunkAlloc to SkArenaAlloc for PathOps
> 
> Change-Id: Iab111a4ebcae4e896b1fdfe285def9ef0ae2ab6b
> Reviewed-on: https://skia-review.googlesource.com/7314
> Reviewed-by: Cary Clark <caryclark@google.com>
> Commit-Queue: Herb Derby <herb@google.com>
> 

TBR=herb@google.com,caryclark@google.com,reviews@skia.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: I6364254571bb1617a9f45ed08f2af4a59f9d5841
Reviewed-on: https://skia-review.googlesource.com/9335
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Derek Sollenberger <djsollen@google.com>
15 files changed