diff -r ad0621bda88a -r e1871d34a188 src/hotspot/share/gc/epsilon/epsilonMemoryPool.hpp
--- a/src/hotspot/share/gc/epsilon/epsilonMemoryPool.hpp	Thu Apr 26 18:16:16 2018 +0200
+++ b/src/hotspot/share/gc/epsilon/epsilonMemoryPool.hpp	Thu Apr 26 18:46:01 2018 +0200
@@ -31,30 +31,15 @@
 #include "services/memoryUsage.hpp"
 #endif // INCLUDE_ALL_GCS
 
-class EpsilonDummyMemoryPool : public CollectedMemoryPool {
-public:
-  EpsilonDummyMemoryPool();
-  MemoryUsage get_memory_usage()      { return MemoryUsage(0, 0, 0, 0); }
-  size_t used_in_bytes()              { return 0; }
-  size_t max_size() const             { return 0; }
-};
-
 class EpsilonMemoryPool : public CollectedMemoryPool {
 private:
   EpsilonHeap* _heap;
 
 public:
   EpsilonMemoryPool(EpsilonHeap* heap);
-
-  size_t committed_in_bytes() {
-    return _heap->capacity();
-  }
-  size_t used_in_bytes() {
-    return _heap->used();
-  }
-  size_t max_size() const {
-    return _heap->max_capacity();
-  }
+  size_t committed_in_bytes() { return _heap->capacity();     }
+  size_t used_in_bytes()      { return _heap->used();         }
+  size_t max_size()     const { return _heap->max_capacity(); }
   MemoryUsage get_memory_usage();
 };