Merge "Only send brightnessChangeEvent if display is on" into udc-dev am: d02f519e am: 32c1f464 am: ccf84ffa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23124062



Change-Id: Ib26e6279da93451bff625bdab4d26bb6618cb5ff
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>