[es6] Map/Set size getter should have "get size" name

src/array-iterator.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var $iteratorCreateResultObject;
 var $arrayValues;
 
 (function() {
 
 "use strict";
@@ skipping 110 matching lines @@
   return CreateArrayIterator(this, ITERATOR_KIND_KEYS);
 }
 
 
 %FunctionSetPrototype(ArrayIterator, new GlobalObject());
 %FunctionSetInstanceClassName(ArrayIterator, 'Array Iterator');
 
 InstallFunctions(ArrayIterator.prototype, DONT_ENUM, [
   'next', ArrayIteratorNext
 ]);
-%FunctionSetName(ArrayIteratorIterator, '[Symbol.iterator]');
+SetFunctionName(ArrayIteratorIterator, symbolIterator);
 %AddNamedProperty(ArrayIterator.prototype, symbolIterator,
                   ArrayIteratorIterator, DONT_ENUM);
 %AddNamedProperty(ArrayIterator.prototype, symbolToStringTag,
                   "Array Iterator", READ_ONLY | DONT_ENUM);
 
 InstallFunctions(GlobalArray.prototype, DONT_ENUM, [
   // No 'values' since it breaks webcompat: http://crbug.com/409858
   'entries', ArrayEntries,
   'keys', ArrayKeys
 ]);
 
 %AddNamedProperty(GlobalArray.prototype, symbolIterator, ArrayValues,
                   DONT_ENUM);
 
 macro EXTEND_TYPED_ARRAY(NAME)
   %AddNamedProperty(GlobalNAME.prototype, 'entries', ArrayEntries, DONT_ENUM);
   %AddNamedProperty(GlobalNAME.prototype, 'values', ArrayValues, DONT_ENUM);
   %AddNamedProperty(GlobalNAME.prototype, 'keys', ArrayKeys, DONT_ENUM);
   %AddNamedProperty(GlobalNAME.prototype, symbolIterator, ArrayValues,
                     DONT_ENUM);
 endmacro
 
 TYPED_ARRAYS(EXTEND_TYPED_ARRAY)
 
 $iteratorCreateResultObject = CreateIteratorResultObject;
 $arrayValues = ArrayValues;
 
 })();