Merge "Updated NotificationPanelViewController to listen to animateExpandNotificationsPanel and animateCollapsePanels." into rvc-dev am: 489dd715 am: 10fa6467 am: ec78b9c9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11921452

Change-Id: Id5be30a8d1b65d71b86eca3629a19b93fe0766c4