Merge "Hide footer for empty shade even if bubbles are present" into sc-dev...

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

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

Change-Id: I63a69c9d826baf0b8d137de431f46deba632a51b