Merge "Send divider change to launcher to animate" into udc-dev am: 322d6946 am: 6e5d7886

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22538104



Change-Id: I4185a42b9b6d7bee2b740d665ca0785745251f42
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>