Delay hiding the cast icon for 3 seconds. DO NOT MERGE am: 1044e162c3 am: b1de85487a  -s ours am: 410bea181b am: 511357c39b
am: 7e16b2e8f5  -s ours

* commit '7e16b2e8f5b74d29711d330f6982d8ed12c3f4db':
  Delay hiding the cast icon for 3 seconds. DO NOT MERGE