--- a/hotspot/src/share/vm/gc/g1/g1CollectorPolicy.hpp	Fri Dec 18 13:38:49 2015 +0000
+++ b/hotspot/src/share/vm/gc/g1/g1CollectorPolicy.hpp	Wed Nov 18 11:31:59 2015 +0100
@@ -179,6 +179,7 @@
   G1Predictions _predictor;
 
   double get_new_prediction(TruncatedSeq const* seq) const;
+  size_t get_new_size_prediction(TruncatedSeq const* seq) const;
 
   // either equal to the number of parallel threads, if ParallelGCThreads
   // has been set, or 1 otherwise