BuildPNGStruct    325 tools/imagediff/image_diff_png.cc   if (!BuildPNGStruct(input, input_size, &png_ptr, &info_ptr))
BuildPNGStruct    404 ui/gfx/codec/png_codec.cc   if (!BuildPNGStruct(input, input_size, &png_ptr, &info_ptr))
BuildPNGStruct    443 ui/gfx/codec/png_codec.cc   if (!BuildPNGStruct(input, input_size, &png_ptr, &info_ptr))