Expand the notification panel by Meta-N.

Bug: 16351826
Change-Id: Ib33f2a3fee385ecb44e1e331e34dd9b2d6dee4aa
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index 5536d4d..db62b13 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -2668,6 +2668,17 @@
                 }
             }
             return -1;
+        } else if (keyCode == KeyEvent.KEYCODE_N && event.isMetaPressed()) {
+            if (down) {
+                IStatusBarService service = getStatusBarService();
+                if (service != null) {
+                    try {
+                        service.expandNotificationsPanel();
+                    } catch (RemoteException e) {
+                        // do nothing.
+                    }
+                }
+            }
         } else if (keyCode == KeyEvent.KEYCODE_ASSIST) {
             if (down) {
                 if (repeatCount == 0) {