--- old/src/hotspot/share/gc/shenandoah/shenandoahSATBMarkQueueSet.hpp	2019-02-25 16:57:09.275644389 -0500
+++ new/src/hotspot/share/gc/shenandoah/shenandoahSATBMarkQueueSet.hpp	2019-02-25 16:57:08.823620557 -0500
@@ -45,10 +45,9 @@
   void initialize(ShenandoahHeap* const heap,
                   Monitor* cbl_mon,
                   int process_completed_threshold,
-                  uint buffer_enqueue_threshold_percentage,
-                  Mutex* lock);
+                  uint buffer_enqueue_threshold_percentage);
 
-  virtual SATBMarkQueue& satb_queue_for_thread(JavaThread* const t) const;
+  virtual SATBMarkQueue& satb_queue_for_thread(Thread* const t) const;
   virtual void filter(SATBMarkQueue* queue);
 };