tree 32f3bc7a4f92afd1078c0cd3ccc8440a74ff5ba1
parent 84c6dafa964184f37d840d91bd04311512ad10c2
author elliottk <elliottk@google.com> 1540945598 -0700
committer Elliott Karpilovsky <elliottk@google.com> 1541534670 +0000

Add warning when writing colocated chroma in Y4M

BUG=aomedia:2096

Change-Id: I33ffb152cedfc32f31e24846ac27e47ffecc5f5e