tree af6cf019d554aeaa7140a28b02cb0effad8642e9
parent cbc5bccebec983cdd7bea4f10373ec3af115def3
author msarett <msarett@google.com> 1455909283 -0800
committer Commit bot <commit-bot@chromium.org> 1455909283 -0800

Update libpng to 1.6.22beta

Intel SSE filter optimizations have been upstreamed.  Let's test on
the upstream version (which we can use in Android).

BUG=skia:4573
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1710083007

Review URL: https://codereview.chromium.org/1710083007