Make png filter functions compatible with libpng
authormsarett <msarett@google.com>
Tue, 16 Feb 2016 16:04:34 +0000 (08:04 -0800)
committerCommit bot <commit-bot@chromium.org>
Tue, 16 Feb 2016 16:04:34 +0000 (08:04 -0800)
commitc29cd72df2ac355201486be27c90e60b0a946e4b
treefa038558811363876eff6c02dbea7665e20bfdec
parent18fab30d7c4858ef2521e0380573aac5a21b2ed9
Make png filter functions compatible with libpng

We hope to upstream these functions to libpng (a C library).

Let's make the code that Skia tests on look like the code
that we are submitting.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1699953002

Review URL: https://codereview.chromium.org/1699953002
src/codec/SkPngFilters.cpp