Merge "Only send brightnessChangeEvent if display is on" into udc-dev am: d02f519e am: 32c1f464 am: 37e78e2a am: d371412e

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



Change-Id: I340789fda14e61b87eff74814ea2559d231e3a85
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>