# note: ICCP and EXIF chunks in an animation that declares neither.
# expect: reject
# anim: ok
# info: reject
# exercises: A metadata chunk whose flag is missing is not stored: the
#   store_chunk test in ParseVP8XChunks() drops it, and the walk then skips
#   its bytes by their declared length like any chunk it does not want. So
#   the animation decodes and the two chunks are simply invisible to the
#   caller -- no error, no chunk. webpinfo refuses the same file, twice
#   over: "Unexpected ICCP chunk detected".
chunks VP8X ICCP ANIM ANMF EXIF
payload ICCP 00112233445566778899
payload EXIF 45786966000049492a00
frame
frame_duration 100
lossless
width 16
height 16
argb 0xff800000 x256