VP8DecompressAlphaRows  289 third_party/libwebp/dec/frame.c       io->a = VP8DecompressAlphaRows(dec, y_start, y_end - y_start);
VP8DecompressAlphaRows  347 third_party/libwebp/dec/vp8i.h const uint8_t* VP8DecompressAlphaRows(VP8Decoder* const dec,