--- old/src/share/vm/memory/iterator.hpp	2015-04-01 12:39:50.515913589 +0200
+++ new/src/share/vm/memory/iterator.hpp	2015-04-01 12:39:50.411913594 +0200
@@ -284,16 +284,6 @@
   // Called for each code blob, but at most once per unique blob.
 
   virtual void do_code_blob(CodeBlob* cb);
-
-  class MarkScope : public StackObj {
-  protected:
-    bool _active;
-  public:
-    MarkScope(bool activate = true);
-      // = { if (active) nmethod::oops_do_marking_prologue(); }
-    ~MarkScope();
-      // = { if (active) nmethod::oops_do_marking_epilogue(); }
-  };
 };
 
 // MonitorClosure is used for iterating over monitors in the monitors cache