Merge "[Motion] Split-shade transition on LS: add an overshoot/overscroll effect" into tm-dev am: 0f3393a4 am: 15374b79

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17320106

Change-Id: I15a24e5e2e77244fdb367d8a5413b87965b474d8