Merge "Add timeouts to animations in UserSwitchingDialog." into udc-dev am: d3446e4e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22967258



Change-Id: Iab492af11b41ef8867b1e0f3d04da3fa9331e479
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>