Merge "Start 2d animation when view laid out." into udc-dev am: 0f4c76e8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23417156



Change-Id: I453abdda03b7924517c4a58d2e3e15506b0adef1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>