Close notification panel when user button is tapped

When multi-user is disabled and user button on the notification panel
is tapped, the contact app is displayed behind the notification panel.
The notification panel should be closed
when the contact app is launched.

Change-Id: I66ebcb66c898dfebe1d09b798f750f696c360da8

packages/SystemUI/src/com/android/systemui/statusbar/phone/MultiUserSwitch.java

@@ -124,6 +124,9 @@ public class MultiUserSwitch extends FrameLayout implements View.OnClickListener
                     getContext(), v, ContactsContract.Profile.CONTENT_URI,
                     ContactsContract.QuickContact.MODE_LARGE, null);
             getContext().startActivityAsUser(intent, new UserHandle(UserHandle.USER_CURRENT));
+            if (mQsPanel != null) {
+                mQsPanel.getHost().collapsePanels();
+            }
         }
     }