Merge commit '71764c4ce5b248a79542238b171a783e82e0fe37' * commit '71764c4ce5b248a79542238b171a783e82e0fe37': Revised "immersive mode" API.
Merge commit '71764c4ce5b248a79542238b171a783e82e0fe37' * commit '71764c4ce5b248a79542238b171a783e82e0fe37': Revised "immersive mode" API.