StoreImageToBitMask  502 third_party/libwebp/enc/vp8l.c   StoreImageToBitMask(bw, width, 0, &refs, histogram_symbols, huffman_codes);
StoreImageToBitMask  612 third_party/libwebp/enc/vp8l.c   StoreImageToBitMask(bw, width, histogram_bits, &refs,