Merge "[Output Switcher] Add switch confirm dialog" into udc-dev am:...

Merge "[Output Switcher] Add switch confirm dialog" into udc-dev am: b8757952 am: a937b49d am: d850b771 am: 2a187673

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22952407



Change-Id: I91d7fb2ae6cd8f92993afa1c1ad31749c6627a7b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>