Don't convert jump and call targets to code object pointers when (de)serializ...

src/serialize.h

Index: src/serialize.h
===================================================================
--- src/serialize.h	(revision 2931)
+++ src/serialize.h	(working copy)
@@ -154,8 +154,9 @@
  private:
   friend class ReferenceUpdater;
 
+  virtual void BeginCodeIteration(Code* code) { }
   virtual void VisitPointers(Object** start, Object** end);
-
+  virtual void VisitCodeTarget(RelocInfo* rinfo);
   bool IsVisited(HeapObject* obj);
 
   Address GetSavedAddress(HeapObject* obj);
@@ -289,6 +290,8 @@
 
  private:
   virtual void VisitPointers(Object** start, Object** end);
+  virtual void BeginCodeIteration(Code* code) { }
+  virtual void VisitCodeTarget(RelocInfo* rinfo);
   virtual void VisitExternalReferences(Address* start, Address* end);
   virtual void VisitRuntimeEntry(RelocInfo* rinfo);