Remove [[Enumerate]] leftovers.

test/mjsunit/harmony/proxies-json.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 111 matching lines @@
 testStringify('{"x":123,"y":{"a":"a(proxy)","b":"b(proxy)","c":"c(proxy)"}}',
               parent3);
 
 
 // Empty proxy.
 
 var handler4 = {
   get: function(target, name) {
     return 0;
   },
-  enumerate: function(target) {
-    return [][Symbol.iterator]();
-  },
   has: function() {
     return true;
   },
   getOwnPropertyDescriptor: function(target, name) {
     return { enumerable: false };
   }
 }
 
 var proxy4 = new Proxy({}, handler4);
 testStringify('{}', proxy4);
 testStringify('{"a":{}}', { a: proxy4 });
 
 
 // Proxy that provides a toJSON function that uses this.
 
 var handler5 = {
   get: function(target, name) {
     if (name == 'z') return 97000;
     return function(key) { return key.charCodeAt(0) + this.z; };
   },
-  enumerate: function(target) {
-    return ['toJSON', 'z'][Symbol.iterator]();
+  ownKeys: function(target) {
+    return ['toJSON', 'z'];
   },
   has: function() {
     return true;
   },
   getOwnPropertyDescriptor: function(target, name) {
     return { enumerable: true };
   }
 }
 
 var proxy5 = new Proxy({}, handler5);
 testStringify('{"a":97097}', { a: proxy5 });
 
 
 // Proxy that provides a toJSON function that returns undefined.
 
 var handler6 = {
   get: function(target, name) {
     return function(key) { return undefined; };
   },
-  enumerate: function(target) {
-    return ['toJSON'][Symbol.iterator]();
+  ownKeys: function(target) {
+    return ['toJSON'];
   },
   has: function() {
     return true;
   },
   getOwnPropertyDescriptor: function(target, name) {
     return { enumerable: true };
   }
 }
 
 var proxy6 = new Proxy({}, handler6);
@@ skipping 313 matching lines @@
 
 var result = JSON.parse('{"foo":0,"bar":1}', reviver);
 assertEquals({foo: 0, bar: proxy}, result);
 assertSame(result.bar, proxy);
 assertEquals(3, log.length);
 for (var i in log) assertSame(target, log[i][1]);
 
 assertEquals(["get", target, "length", proxy], log[0]);
 assertEquals(["get", target, "0", proxy], log[1]);
 assertEquals(["deleteProperty", target, "0"], log[2]);