Merge "Consolidate animation to show divider bar" into tm-dev am: 56043e3d...

Merge "Consolidate animation to show divider bar" into tm-dev am: 56043e3d am: 037a4f40 am: c57ed669 am: 593f0104

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18157809



Change-Id: I0ca62a4991ea2a3d7b9f74dc2f801b2eeb919361
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>