Implement new multi-user affordance.

Change-Id: I6d7e6cc9893bc7d4fd87431e8e364500af42f107
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index c74911f..9b360cf 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -95,6 +95,7 @@
         super.onFinishInflate();
         mHeader = (StatusBarHeaderView) findViewById(R.id.header);
         mHeader.getBackgroundView().setOnClickListener(this);
+        mHeader.setOverlayParent(this);
         mKeyguardStatusView = findViewById(R.id.keyguard_status_view);
         mStackScrollerContainer = findViewById(R.id.notification_container_parent);
         mQsContainer = (QuickSettingsContainerView) findViewById(R.id.quick_settings_container);