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

Merge "Send divider change to launcher to animate" into udc-dev am: 322d6946 am: 6e5d7886 am: 367a4f1b am: 37768a93

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



Change-Id: Iee75ff809e22acfd886e8c1a15e7013b8a0c8e7f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>