tree b1cf94f99abde231d070f862c13e712b29976e6d
parent 5d53c06967da74189935063f7a75da6719a9c733
author Matt Sarett <msarett@google.com> 1452276042 -0500
committer The Android Automerger <android-build@google.com> 1455654485 -0800

DO NOT MERGE Update libpng to 1.6.20

BUG:23265085
Change-Id: I85199805636d771f3597b691b63bc0bf46084833
(cherry picked from commit bbe98b40cda082024b669fa508931042eed18f82)