Merge "a11y volume slider focus" into udc-dev am: 750f874b am: 17ec65b0...

Merge "a11y volume slider focus" into udc-dev am: 750f874b am: 17ec65b0 am: 6c98cc70 am: 4f4e2a1b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23601058



Change-Id: I999be72c2f212fce584571e82dd4a6a078f9c18f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>