Proxies: Fix ToStringArray function so that it does not reject some keys.

test/mjsunit/harmony/proxies.js

 // Copyright 2011 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 1612 matching lines @@
 
 function TestPropertyNames2(create, handler, names) {
   var p = create(handler)
   assertArrayEquals(names, Object.getOwnPropertyNames(p))
 }
 
 TestPropertyNames([], {
   getOwnPropertyNames: function() { return [] }
 })
 
-TestPropertyNames(["a", "zz", " ", "0"], {
-  getOwnPropertyNames: function() { return ["a", "zz", " ", 0] }
+TestPropertyNames(["a", "zz", " ", "0", "toString"], {
+  getOwnPropertyNames: function() { return ["a", "zz", " ", 0, "toString"] }
 })
 
 TestPropertyNames(["throw", "function "], {
   getOwnPropertyNames: function() { return this.getOwnPropertyNames2() },
   getOwnPropertyNames2: function() { return ["throw", "function "] }
 })
 
 TestPropertyNames(["[object Object]"], {
   get getOwnPropertyNames() {
     return function() { return [{}] }
@@ skipping 26 matching lines @@
 
 function TestKeys2(create, handler, names) {
   var p = create(handler)
   assertArrayEquals(names, Object.keys(p))
 }
 
 TestKeys([], {
   keys: function() { return [] }
 })
 
-TestKeys(["a", "zz", " ", "0"], {
-  keys: function() { return ["a", "zz", " ", 0] }
+TestKeys(["a", "zz", " ", "0", "toString"], {
+  keys: function() { return ["a", "zz", " ", 0, "toString"] }
 })
 
 TestKeys(["throw", "function "], {
   keys: function() { return this.keys2() },
   keys2: function() { return ["throw", "function "] }
 })
 
 TestKeys(["[object Object]"], {
   get keys() {
     return function() { return [{}] }
@@ skipping 576 matching lines @@
 function TestConstructorWithProxyPrototype2(create, handler) {
   function C() {};
   C.prototype = create(handler);
 
   var o = new C;
   assertSame(C.prototype, o.__proto__);
   assertSame(C.prototype, Object.getPrototypeOf(o));
 }
 
 TestConstructorWithProxyPrototype();