Merge "Check whether doze is enabled before starting the screen off animation." into sc-dev am: ba255e63 am: fa520aac am: a444b665

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

Change-Id: Ifcfa8034369a2df6819c48eba93fcfc2c06b15ca