Merge "Check whether doze is enabled before starting the screen off animation." into sc-dev am: ba255e63 am: a70c66f5 am: a94b678d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15160210

Change-Id: I8441ac1b13550c1084d558853c1e57ada2a774e0