Merge "Hide footer for empty shade even if bubbles are present" into sc-dev am: e2eda079 am: 4717f6e0 am: d711fe30

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14949618

Change-Id: Ia20f1fd5a9217484aed203ce1107a531223c0299