Enable Delta AA by default

Bug: skia:
Change-Id: I1ff9e18cc667d719d7a692555ae5c0f9cdd88993
Reviewed-on: https://skia-review.googlesource.com/27721
Reviewed-by: Cary Clark <caryclark@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Yuqian Li <liyuqian@google.com>
1 file changed