[automerge] DO NOT MERGE: Downbranch don't need this adjustment [Output Switcher] Keep the check for single device of add button 2p: f957ea7413

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16819998

Bug: 192631896
Change-Id: If594e712fdab470686f7fe07e5c4f9db93faeb15