png_set_tRNS     2530 third_party/libpng/png.h extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr,
png_set_tRNS     1421 third_party/libpng/pngrutil.c    png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans,
png_set_tRNS      224 ui/gfx/codec/png_codec_unittest.cc       png_set_tRNS(png_ptr, info_ptr, alpha_data, alpha_size, NULL);