Merge "Check whether StatusBar is initialized in ScreenOffAnimationController." into sc-dev am: 412a2d2c am: 278420dc am: 5095fcd6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15054296

Change-Id: I0034e795d136454ac829208af307b54032c7c683