Merge "Show shade footer when hun is posted while shade is open" into sc-dev am: 0a1d974b am: 0e785de9 am: 26fcf8c5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15175803

Change-Id: I46ba2ef9290f9a69ee600805bdcf0efdc8bbb4f3