--- old/src/share/vm/gc/shared/generation.hpp	2015-12-01 12:06:23.802930278 +0100
+++ new/src/share/vm/gc/shared/generation.hpp	2015-12-01 12:06:23.702930281 +0100
@@ -536,11 +536,8 @@
   // the block is an object.
   virtual bool block_is_obj(const HeapWord* addr) const;
 
-
-  // PrintGC, PrintGCDetails support
   void print_heap_change(size_t prev_used) const;
 
-  // PrintHeapAtGC support
   virtual void print() const;
   virtual void print_on(outputStream* st) const;