diff -r 6ffb8d7fe1e4 -r a421bdf22394 src/hotspot/share/gc/g1/g1DirtyCardQueue.hpp
--- a/src/hotspot/share/gc/g1/g1DirtyCardQueue.hpp	Tue Mar 05 14:07:30 2019 -0800
+++ b/src/hotspot/share/gc/g1/g1DirtyCardQueue.hpp	Tue Mar 05 19:54:33 2019 -0500
@@ -30,7 +30,7 @@
 
 class G1DirtyCardQueueSet;
 class G1FreeIdSet;
-class JavaThread;
+class Thread;
 class Monitor;
 
 // A closure class for processing card table entries.  Note that we don't
@@ -128,7 +128,7 @@
   // mutator threads to do card-processing work.
   static uint num_par_ids();
 
-  static void handle_zero_index_for_thread(JavaThread* t);
+  static void handle_zero_index_for_thread(Thread* t);
 
   // Apply G1RefineCardConcurrentlyClosure to completed buffers until there are stop_at
   // completed buffers remaining.