am 44af754c: (-s ours) am d02bdaab: Remove experimental immersive mode support. DO NOT MERGE

Merge commit '44af754cf0c9ad9a8162e1bd2af60737e81a8beb'

* commit '44af754cf0c9ad9a8162e1bd2af60737e81a8beb':
  Remove experimental immersive mode support. DO NOT MERGE