Merge "Merge "Allow status bar to be transparent, and clear LIGHT flags." into rvc-dev am: 25602430 am: e9e55ae8 am: 978a3a60" into rvc-qpr-dev-plus-aosp am: 91f63044

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12166023

Change-Id: Ia90a56dc2e8fd9451a6b7a12f1c46168317130d1