Pause animators when app is not visible am: b99cc5b4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18528824



Change-Id: I560f0875e7408f41393246c62ea73931e862a986
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>