Merge "Decouple InsetsController from ViewRootImpl" into rvc-dev am: 1db61c9a6e am: 10d6a4b84a am: 19c1dc306d am: b0d6a2324c am: 8bd93b785f

Change-Id: I8f403f9d14a6e4b10daea7c3b43270422c0149b2