--- old/src/share/vm/gc/g1/g1FullGCScope.hpp	2017-06-14 16:39:40.515579856 +0200
+++ new/src/share/vm/gc/g1/g1FullGCScope.hpp	2017-06-14 16:39:40.383574645 +0200
@@ -26,6 +26,7 @@
 #define SHARE_VM_GC_G1_G1FULLGCSCOPE_HPP
 
 #include "gc/g1/g1CollectedHeap.hpp"
+#include "gc/g1/g1HeapTransition.hpp"
 #include "gc/shared/collectorCounters.hpp"
 #include "gc/shared/gcId.hpp"
 #include "gc/shared/gcTrace.hpp"
@@ -36,6 +37,7 @@
 #include "memory/allocation.hpp"
 #include "services/memoryService.hpp"
 
+// Class used to group scoped objects used in the Full GC together.
 class G1FullGCScope : public StackObj {
   ResourceMark            _rm;
   bool                    _explicit_gc;
@@ -49,6 +51,7 @@
   ClearedAllSoftRefs      _soft_refs;
   TraceCollectorStats     _collector_stats;
   TraceMemoryManagerStats _memory_stats;
+  G1HeapTransition        _heap_transition;
 
   // Singleton instance.
   static G1FullGCScope* _instance;
@@ -63,6 +66,7 @@
 
   STWGCTimer* timer();
   SerialOldTracer* tracer();
+  G1HeapTransition* heap_transition();
 };
 
 #endif //SHARE_VM_GC_G1_G1FULLGCSCOPE_HPP