Merge "Create its own Handler instance for persisting display brightness" into...

Merge "Create its own Handler instance for persisting display brightness" into tm-dev am: e8f4a6d6 am: cc5019f6 am: beb008e8 am: 36e10a45

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18827235



Change-Id: Id2ead6151582befa2a31a2b1de9fbfc598e72360
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>