PNG_NO_HANDLE_AS_UNKNOWN  560 third_party/libpng/pngconf.h #  define PNG_NO_HANDLE_AS_UNKNOWN
PNG_NO_HANDLE_AS_UNKNOWN 1051 third_party/libpng/pngconf.h #    undef PNG_NO_HANDLE_AS_UNKNOWN
PNG_NO_HANDLE_AS_UNKNOWN  114 third_party/libpng/pngusr.h #define PNG_NO_HANDLE_AS_UNKNOWN