Unify symbols sharing across native scripts and runtime.

src/string-iterator.js

Index: src/string-iterator.js
diff --git a/src/string-iterator.js b/src/string-iterator.js
index bb392ef10efbaa908e89d466faadfbcd4b68d14b..3d3273e298405043404f60a0bbbfa07f3ccce689 100644
--- a/src/string-iterator.js
+++ b/src/string-iterator.js
@@ -11,9 +11,12 @@
 // -------------------------------------------------------------------
 // Imports
 
-var GlobalString = global.String;
-
 var ArrayIteratorCreateResultObject;
+var GlobalString = global.String;
+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;
@@ -21,11 +24,6 @@ utils.Import(function(from) {
 
 // -------------------------------------------------------------------
 
-var stringIteratorIteratedStringSymbol =
-    GLOBAL_PRIVATE("StringIterator#iteratedString");
-var stringIteratorNextIndexSymbol = GLOBAL_PRIVATE("StringIterator#next");
-
-
 function StringIterator() {}
 
 
@@ -33,8 +31,8 @@ function StringIterator() {}
 function CreateStringIterator(string) {
   var s = TO_STRING_INLINE(string);
   var iterator = new StringIterator;
-  SET_PRIVATE(iterator, stringIteratorIteratedStringSymbol, s);
-  SET_PRIVATE(iterator, stringIteratorNextIndexSymbol, 0);
+  SET_PRIVATE(iterator, StringIteratorIteratedStringSymbol, s);
+  SET_PRIVATE(iterator, StringIteratorNextIndexSymbol, 0);
   return iterator;
 }
 
@@ -43,21 +41,21 @@ function CreateStringIterator(string) {
 function StringIteratorNext() {
   var iterator = TO_OBJECT(this);
 
-  if (!HAS_DEFINED_PRIVATE(iterator, stringIteratorNextIndexSymbol)) {
+  if (!HAS_DEFINED_PRIVATE(iterator, StringIteratorNextIndexSymbol)) {
     throw MakeTypeError(kIncompatibleMethodReceiver,
                         'String Iterator.prototype.next');
   }
 
-  var s = GET_PRIVATE(iterator, stringIteratorIteratedStringSymbol);
+  var s = GET_PRIVATE(iterator, StringIteratorIteratedStringSymbol);
   if (IS_UNDEFINED(s)) {
     return ArrayIteratorCreateResultObject(UNDEFINED, true);
   }
 
-  var position = GET_PRIVATE(iterator, stringIteratorNextIndexSymbol);
+  var position = GET_PRIVATE(iterator, StringIteratorNextIndexSymbol);
   var length = TO_UINT32(s.length);
 
   if (position >= length) {
-    SET_PRIVATE(iterator, stringIteratorIteratedStringSymbol,
+    SET_PRIVATE(iterator, StringIteratorIteratedStringSymbol,
                 UNDEFINED);
     return ArrayIteratorCreateResultObject(UNDEFINED, true);
   }
@@ -74,7 +72,7 @@ function StringIteratorNext() {
     }
   }
 
-  SET_PRIVATE(iterator, stringIteratorNextIndexSymbol, position);
+  SET_PRIVATE(iterator, StringIteratorNextIndexSymbol, position);
 
   return ArrayIteratorCreateResultObject(resultString, false);
 }