Merge "mLocalDeviceIdleController could be null." into sc-dev am: bf25b688 am: e6dedf3d am: 1a38e41c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14521306

Change-Id: I01688b0fc9a9399959f02d7e5e47a1b2e2777ce9