PNG_PRIVATE      1567 third_party/libpng/pngconf.h #        define PNG_PRIVATE \
PNG_PRIVATE      1570 third_party/libpng/pngconf.h #        define PNG_PRIVATE \
PNG_PRIVATE      1593 third_party/libpng/pngconf.h #  define PNG_PRIVATE     /* This is a private libpng function */