Merge "Update UI for account switcher" into udc-dev am: 91769359 am: d1f9e776

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21990083



Change-Id: Idb26f29bab350c47f4417242adcfde030525c9f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>