YouTube jank test fix

Change-Id: I8f5a21bf8d03c4e0e9327296b4e12cc0fac5dd5d
diff --git a/tests/jank/sysapp/src/com/android/sysapp/janktests/YouTubeJankTests.java b/tests/jank/sysapp/src/com/android/sysapp/janktests/YouTubeJankTests.java
index d0614d4..67765f6 100644
--- a/tests/jank/sysapp/src/com/android/sysapp/janktests/YouTubeJankTests.java
+++ b/tests/jank/sysapp/src/com/android/sysapp/janktests/YouTubeJankTests.java
@@ -136,6 +136,11 @@
                     Until.findObject(By.res(PACKAGE_NAME, "ok").text("OK")), LONG_TIMEOUT);
             Assert.assertNotNull("No 'ok' button to bypass music", ok);
             ok.click();
-      }
+        }
+        UiObject2 laterButton = mDevice.wait(
+            Until.findObject(By.res(PACKAGE_NAME, "later_button")), LONG_TIMEOUT);
+        if (laterButton != null) {
+            laterButton.click();
+         }
     }
 }