Unify symbols sharing across native scripts and runtime.

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(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
 // Imports
 
+var ArrayIteratorCreateResultObject;
 var GlobalString = global.String;
-
-var ArrayIteratorCreateResultObject;
+var stringIteratorIteratedStringSymbol =
+    utils.GetPrivateSymbol("string_iterator_iterated_string_symbol");
+var stringIteratorNextIndexSymbol =
+    utils.GetPrivateSymbol("string_iterator_next_index_symbol");
 
 utils.Import(function(from) {
   ArrayIteratorCreateResultObject = from.ArrayIteratorCreateResultObject;
 });
 
 // -------------------------------------------------------------------
 
-var stringIteratorIteratedStringSymbol =
-    GLOBAL_PRIVATE("StringIterator#iteratedString");
-var stringIteratorNextIndexSymbol = GLOBAL_PRIVATE("StringIterator#next");
-
-
 function StringIterator() {}
 
 
 // 21.1.5.1 CreateStringIterator Abstract Operation
 function CreateStringIterator(string) {
   var s = TO_STRING_INLINE(string);
   var iterator = new StringIterator;
   SET_PRIVATE(iterator, stringIteratorIteratedStringSymbol, s);
   SET_PRIVATE(iterator, stringIteratorNextIndexSymbol, 0);
   return iterator;
@@ skipping 55 matching lines @@
   'next', StringIteratorNext
 ]);
 %AddNamedProperty(StringIterator.prototype, symbolToStringTag,
                   "String Iterator", READ_ONLY | DONT_ENUM);
 
 utils.SetFunctionName(StringPrototypeIterator, symbolIterator);
 %AddNamedProperty(GlobalString.prototype, symbolIterator,
                   StringPrototypeIterator, DONT_ENUM);
 
 })