Don't compile functions in a context the caller doesn't have access to

test/mjsunit/es6/proxies-cross-realm-exception.js

Index: test/mjsunit/es6/proxies-cross-realm-exception.js
diff --git a/test/mjsunit/es6/proxies-cross-realm-exception.js b/test/mjsunit/es6/proxies-cross-realm-exception.js
index ffba5c2d81e853443393eeff27e80121c5a800e1..3c8722d6e31b9515f4dd7dbf8b445fa1df611b1f 100644
--- a/test/mjsunit/es6/proxies-cross-realm-exception.js
+++ b/test/mjsunit/es6/proxies-cross-realm-exception.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax
+// Flags: --allow-natives-syntax --restricted-realms
 
 // Do not read out the prototype from a cross-realm object.
 var realm = Realm.create();