Update to libpng 1.6.19
Removes all Android modifications, including
SK_PNG_INDEX_SUPPORTED (for subset decoding).
BUG:23265085
BUG:25424175
Change-Id: Iaa4f6cc9fc6db8e4b46a83211363adfcbf07b589
diff --git a/pngusr.dfa b/pngusr.dfa
index 9d39564..83067c3 100644
--- a/pngusr.dfa
+++ b/pngusr.dfa
@@ -8,7 +8,7 @@
# here by entering the appropriate values as #defines preceded by '@' (to cause,
# them to be passed through to the build of pnglibconf.h), for example:
#
-# @# define PNG_USER_WIDTH_MAX 1000000
-# @# define PNG_USER_HEIGHT_MAX 1000000
-# @# define PNG_USER_CHUNK_CACHE_MAX 128
-# @# define PNG_USER_CHUNK_MALLOC_MAX 8000000
+# @# define PNG_USER_WIDTH_MAX 65535
+# @# define PNG_USER_HEIGHT_MAX 65535
+# @# define PNG_USER_CHUNK_CACHE_MAX 256
+# @# define PNG_USER_CHUNK_MALLOC_MAX 640000