Fix Object.getOwnPropertyDescriptor in string elements.

test/mjsunit/get-own-property-descriptor.js

Index: test/mjsunit/get-own-property-descriptor.js
diff --git a/test/mjsunit/get-own-property-descriptor.js b/test/mjsunit/get-own-property-descriptor.js
index abb24200343d00c4d50fb98bf840ee94a52657c8..159c63bcc1f7e7c8698fd92e654e070c8a56427a 100644
--- a/test/mjsunit/get-own-property-descriptor.js
+++ b/test/mjsunit/get-own-property-descriptor.js
@@ -73,7 +73,7 @@ assertEquals(descObjectElement.value, 42);
 var a = new String('foobar');
 for (var i = 0; i < a.length; i++) {
   var descStringObject = Object.getOwnPropertyDescriptor(a, i);
-  assertFalse(descStringObject.enumerable);
+  assertTrue(descStringObject.enumerable);
   assertFalse(descStringObject.configurable);
   assertFalse(descStringObject.writable);
   assertEquals(descStringObject.value, a.substring(i, i+1));