Adapt to new DownloadScheme interface

Change-Id: Ib0a07446adf2e69fdfcbd847a5645fece80c6eda
diff --git a/javatests/com/googlesource/gerrit/plugins/supermanifest/JiriSuperManifestIT.java b/javatests/com/googlesource/gerrit/plugins/supermanifest/JiriSuperManifestIT.java
index a2beb73..03e1296 100644
--- a/javatests/com/googlesource/gerrit/plugins/supermanifest/JiriSuperManifestIT.java
+++ b/javatests/com/googlesource/gerrit/plugins/supermanifest/JiriSuperManifestIT.java
@@ -798,5 +798,10 @@
     public boolean isEnabled() {
       return true;
     }
+
+    @Override
+    public boolean isHidden() {
+      return false;
+    }
   }
 }