Merge commit '747f75dc0882138828ac2b2752c2872ccae49747' * commit '747f75dc0882138828ac2b2752c2872ccae49747': New API for "immersive" activity windows.
Merge commit '747f75dc0882138828ac2b2752c2872ccae49747' * commit '747f75dc0882138828ac2b2752c2872ccae49747': New API for "immersive" activity windows.