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

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

Change-Id: Ieefdce81ea4209a5fc45e27ce099b48f6f1306f4