Use function wrapper argument to expose internal arrays to native scripts.

src/string.js

 // Copyright 2012 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 $stringCharAt;
 var $stringIndexOf;
 var $stringSubstring;
 
 (function(global, shared, exports) {
 
 %CheckIsBootstrapping();
 
+// -------------------------------------------------------------------
+// Imports
+
 var GlobalRegExp = global.RegExp;
 var GlobalString = global.String;
+var InternalArray = shared.InternalArray;
+var InternalPackedArray = shared.InternalPackedArray;
 
 //-------------------------------------------------------------------
 
 function StringConstructor(x) {
   if (%_ArgumentsLength() == 0) x = '';
   if (%_IsConstructCall()) {
     %_SetValueOf(this, TO_STRING_INLINE(x));
   } else {
     return IS_SYMBOL(x) ?
         %_CallFunction(x, $symbolToString) : TO_STRING_INLINE(x);
@@ skipping 1140 matching lines @@
   "strike", StringStrike,
   "sub", StringSub,
   "sup", StringSup
 ]);
 
 $stringCharAt = StringCharAtJS;
 $stringIndexOf = StringIndexOfJS;
 $stringSubstring = StringSubstring;
 
 })