Merge "Add "Broadcast" button at output switcher" into tm-dev am: a2a4b30f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17394615



Change-Id: I7d0c25b01da5f3ebcbd7fb135224f88796d3b806
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>