Merge "Include a shared media team OWNERS for easier management" am: 9af0e281c2 am: 210512eb6c am: cf3cccb6d2

Original change: https://android-review.googlesource.com/c/platform/external/libgav1/+/1393676

Change-Id: Ib161fc569447e5121ccc445929b385a2d76c15d8