--- old/src/hotspot/share/memory/iterator.hpp	2019-10-16 19:29:43.992417581 -0700
+++ new/src/hotspot/share/memory/iterator.hpp	2019-10-16 19:29:43.736408306 -0700
@@ -347,9 +347,6 @@
   // Read/write the oop
   virtual void do_oop(oop* o) = 0;
 
-  // Read/write a oop that's the type of java.lang.Class
-  virtual void do_mirror_oop(oop* o) = 0;
-
   bool writing() {
     return !reading();
   }