Enable ES6 iteration by default

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 1789 matching lines @@
 TestKeysThrow({
   get getOwnPropertyNames() { throw "myexn" }
 })
 
 TestKeysThrow({
   get getOwnPropertyNames() {
     return function() { throw "myexn" }
   },
 })
 
-TestKeysThrow([], {
+TestKeysThrow({
   get getOwnPropertyNames() {
     return function() { return [1, 2] }
   },
   getOwnPropertyDescriptor: function(k) { throw "myexn" }
 })
 
 
 
 // Fixing (Object.freeze, Object.seal, Object.preventExtensions,
 //         Object.isFrozen, Object.isSealed, Object.isExtensible)
@@ skipping 474 matching lines @@
 
 function TestConstructorWithProxyPrototype2(create, handler) {
   function C() {};
   C.prototype = create(handler);
 
   var o = new C;
   assertSame(C.prototype, Object.getPrototypeOf(o));
 }
 
 TestConstructorWithProxyPrototype();