Revert of Revert of Wrap typed array implementations in functions.

src/string-iterator.js

Index: src/string-iterator.js
diff --git a/src/string-iterator.js b/src/string-iterator.js
index 8d72b81e8be159371546362a159eaf87c4c50f1e..dea81e572540a5615a54d527949bbe3a4ead317e 100644
--- a/src/string-iterator.js
+++ b/src/string-iterator.js
@@ -48,7 +48,7 @@
 
   var s = GET_PRIVATE(iterator, stringIteratorIteratedStringSymbol);
   if (IS_UNDEFINED(s)) {
-    return CreateIteratorResultObject(UNDEFINED, true);
+    return $iteratorCreateResultObject(UNDEFINED, true);
   }
 
   var position = GET_PRIVATE(iterator, stringIteratorNextIndexSymbol);
@@ -57,7 +57,7 @@
   if (position >= length) {
     SET_PRIVATE(iterator, stringIteratorIteratedStringSymbol,
                 UNDEFINED);
-    return CreateIteratorResultObject(UNDEFINED, true);
+    return $iteratorCreateResultObject(UNDEFINED, true);
   }
 
   var first = %_StringCharCodeAt(s, position);
@@ -74,7 +74,7 @@
 
   SET_PRIVATE(iterator, stringIteratorNextIndexSymbol, position);
 
-  return CreateIteratorResultObject(resultString, false);
+  return $iteratorCreateResultObject(resultString, false);
 }