Added vibration feedback to Projection Offscreen Test for devices without audio feedback capabilities.

Change-Id: Id399eaedf0d699a9099460870391a75f6225e641
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/projection/offscreen/ProjectionOffscreenActivity.java b/apps/CtsVerifier/src/com/android/cts/verifier/projection/offscreen/ProjectionOffscreenActivity.java
index 510a03b..c202bb1 100644
--- a/apps/CtsVerifier/src/com/android/cts/verifier/projection/offscreen/ProjectionOffscreenActivity.java
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/projection/offscreen/ProjectionOffscreenActivity.java
@@ -35,6 +35,7 @@
 import android.os.Looper;
 import android.os.RemoteException;
 import android.os.SystemClock;
+import android.os.Vibrator;
 import android.util.DisplayMetrics;
 import android.util.Log;
 import android.view.KeyEvent;
@@ -89,6 +90,7 @@
             Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
             Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification);
             r.play();
+            ((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(1000);
         }
     };