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

src/string-iterator.js

 // Copyright 2014 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.
 
 (function() {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 73 matching lines @@
 }
 
 //-------------------------------------------------------------------
 
 %FunctionSetPrototype(StringIterator, new GlobalObject());
 %FunctionSetInstanceClassName(StringIterator, 'String Iterator');
 
 InstallFunctions(StringIterator.prototype, DONT_ENUM, [
   'next', StringIteratorNext
 ]);
-%FunctionSetName(StringIteratorIterator, '[Symbol.iterator]');
+SetFunctionName(StringIteratorIterator, symbolIterator);
 %AddNamedProperty(StringIterator.prototype, symbolIterator,
                   StringIteratorIterator, DONT_ENUM);
 %AddNamedProperty(StringIterator.prototype, symbolToStringTag,
                   "String Iterator", READ_ONLY | DONT_ENUM);
 
-%FunctionSetName(StringPrototypeIterator, '[Symbol.iterator]');
+SetFunctionName(StringPrototypeIterator, symbolIterator);
 %AddNamedProperty(GlobalString.prototype, symbolIterator,
                   StringPrototypeIterator, DONT_ENUM);
 
 })();