--- old/src/hotspot/share/gc/z/zRootsIterator.hpp	2019-09-04 13:48:39.310198575 +0200
+++ new/src/hotspot/share/gc/z/zRootsIterator.hpp	2019-09-04 13:48:39.001188118 +0200
@@ -84,7 +84,6 @@
 
 class ZRootsIterator {
 private:
-  bool _visit_invisible;
   bool _visit_jvmti_weak_export;
 
   void do_universe(ZRootsIteratorClosure* cl);
@@ -106,18 +105,12 @@
   ZParallelOopsDo<ZRootsIterator, &ZRootsIterator::do_code_cache>        _code_cache;
 
 public:
-  ZRootsIterator(bool visit_invisible = true, bool visit_jvmti_weak_export = false);
+  ZRootsIterator(bool visit_jvmti_weak_export = false);
   ~ZRootsIterator();
 
   void oops_do(ZRootsIteratorClosure* cl);
 };
 
-class ZRootsIteratorNoInvisible : public ZRootsIterator {
-public:
-  ZRootsIteratorNoInvisible() :
-      ZRootsIterator(false /* visit_invisible */, false /* visit_jvmti_weak_export */) {}
-};
-
 class ZConcurrentRootsIterator {
 private:
   ZOopStorageIterator _jni_handles_iter;