Fix the ScopeIterator reimplemantation.

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index 1436bf9066c5d50b11c91ec44d1481fd0434d2a4..c17fe756a600f18650fcd228cb2977096df41f3c 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -174,7 +174,7 @@ class ParserApi {
 
   // Preparser that only does preprocessing that makes sense if only used
   // immediately after.
-  static ScriptDataImpl* PartialPreParse(UC16CharacterStream* source,
+  static ScriptDataImpl* PartialPreParse(Handle<String> source,
                                          v8::Extension* extension,
                                          int flags);
 };