Optimize Object.seal and Object.preventExtensions

test/mjsunit/object-seal-global.js

Index: test/mjsunit/object-seal-global.js
diff --git a/test/mjsunit/readonly-accessor.js b/test/mjsunit/object-seal-global.js
similarity index 65%
copy from test/mjsunit/readonly-accessor.js
copy to test/mjsunit/object-seal-global.js
index 5a73525fea60d67074d81e392d08d8448f8ae39d..ec9f82e9bff5c73208b08b8a69c84405b2a5e823 100644
--- a/test/mjsunit/readonly-accessor.js
+++ b/test/mjsunit/object-seal-global.js
@@ -2,6 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-var foo = {};
-foo.__proto__ = new String("bar");
-foo.length = 20;
+Object.seal(this);
+assertTrue(Object.isSealed(this));
+assertFalse(Object.isFrozen(this));