Adapt to updated PermissionBackend#ForProject interface

Change-Id: I8d55c8f6330f1e2184ff41e622aa84214224b173
diff --git a/src/main/java/com/gerritforge/gerrit/modules/virtualhost/ForHiddenProject.java b/src/main/java/com/gerritforge/gerrit/modules/virtualhost/ForHiddenProject.java
index 3a1a3c9..7883e48 100644
--- a/src/main/java/com/gerritforge/gerrit/modules/virtualhost/ForHiddenProject.java
+++ b/src/main/java/com/gerritforge/gerrit/modules/virtualhost/ForHiddenProject.java
@@ -54,6 +54,11 @@
     }
 
     @Override
+    public ForChange indexedChange(ChangeData cd, ChangeNotes notes) {
+      return forChange;
+    }
+
+    @Override
     public void check(RefPermission perm) throws AuthException, PermissionBackendException {
       throwDenied();
     }