Merge "Adding hover state for brightness slider in quick settings" into udc-qpr-dev am: 29a919e3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23877019



Change-Id: Iad8d5c6d21866242df4121e065b32c0e388f62b2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>