--- old/src/share/vm/memory/generation.hpp	Mon Feb 10 19:15:13 2014
+++ new/src/share/vm/memory/generation.hpp	Mon Feb 10 19:15:12 2014
@@ -457,6 +457,7 @@
   // expected to be GC worker thread-local, with the worker index
   // indicated by "thr_num".
   virtual void* get_data_recorder(int thr_num) { return NULL; }
+  virtual void sample_eden_chunk() {}
 
   // Some generations may require some cleanup actions before allowing
   // a verification.