Merge "[Status Bar Refactor] Move some PanelView setters + getters into PanelViewController and out of PanelBar." into sc-v2-dev am: 837ed2be5a am: e41d00bc66

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15854191

Change-Id: I87d1c5a1d8415b0addcec034342565c706eb7c9c