Merge "[Output Switcher] [A11y] Add description for seekbar" into tm-dev am: 14f92d88

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18572029



Change-Id: I3c66b43d20d3f01b96b7635aebf57c6e4d12e892
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>