- Improve generated sources:

vm/object.h

Index: vm/object.h
===================================================================
--- vm/object.h	(revision 10270)
+++ vm/object.h	(working copy)
@@ -1782,7 +1782,8 @@
   }
 
   static RawTokenStream* New(intptr_t length);
-  static RawTokenStream* New(const Scanner::GrowableTokenStream& tokens);
+  static RawTokenStream* New(const Scanner::GrowableTokenStream& tokens,
+                             const String& private_key);
 
   // The class Iterator encapsulates iteration over the tokens
   // in a TokenStream object.
@@ -1825,6 +1826,9 @@
  private:
   void SetLength(intptr_t value) const;
 
+  RawString* PrivateKey() const;
+  void SetPrivateKey(const String& value) const;
+
   uint8_t* EntryAddr(intptr_t token_pos) const {
     ASSERT((token_pos >=0) && (token_pos < Length()));
     return &raw_ptr()->data_[token_pos];