Merge "Add method for setting whether emergency gesture UI is showing" into udc-dev am: 611d19df

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22137523



Change-Id: I398721523d595e78f9c5b13c779cef1721751197
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>