Add metrics logging for fingerprint swipe for notification panel.

Add metrics log when fingerprint swipe to expand/collapse notification
panel is handled, and increment the notification and quick setting open
count correspondingly.

Bug: 29257528
Change-Id: Ic24c6463a4400711874602157e2fcadc7f0f6da6
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 64f205d..768e5f2 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -81,8 +81,8 @@
 
     private static final float LOCK_ICON_ACTIVE_SCALE = 1.2f;
 
-    private static final String COUNTER_PANEL_OPEN = "panel_open";
-    private static final String COUNTER_PANEL_OPEN_QS = "panel_open_qs";
+    static final String COUNTER_PANEL_OPEN = "panel_open";
+    static final String COUNTER_PANEL_OPEN_QS = "panel_open_qs";
     private static final String COUNTER_PANEL_OPEN_PEEK = "panel_open_peek";
 
     private static final Rect mDummyDirtyRect = new Rect(0, 0, 1, 1);