diff --git a/runtime/gc/reference_queue.h b/runtime/gc/reference_queue.h
index 1d8cc1a..8ef0d20 100644
--- a/runtime/gc/reference_queue.h
+++ b/runtime/gc/reference_queue.h
@@ -58,23 +58,22 @@
   mirror::Reference* DequeuePendingReference() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   // Enqueues finalizer references with white referents.  White referents are blackened, moved to the
   // zombie field, and the referent field is cleared.
-  void EnqueueFinalizerReferences(ReferenceQueue& cleared_references,
-                                  IsMarkedCallback* is_marked_callback,
+  void EnqueueFinalizerReferences(ReferenceQueue* cleared_references,
+                                  IsHeapReferenceMarkedCallback* is_marked_callback,
                                   MarkObjectCallback* mark_object_callback, void* arg)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   // Walks the reference list marking any references subject to the reference clearing policy.
   // References with a black referent are removed from the list.  References with white referents
   // biased toward saving are blackened and also removed from the list.
-  void ForwardSoftReferences(IsMarkedCallback* preserve_callback, void* arg)
+  void ForwardSoftReferences(IsHeapReferenceMarkedCallback* preserve_callback, void* arg)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   // Unlink the reference list clearing references objects with white referents.  Cleared references
   // registered to a reference queue are scheduled for appending by the heap worker thread.
-  void ClearWhiteReferences(ReferenceQueue& cleared_references,
-                            IsMarkedCallback* is_marked_callback,
-                            void* arg)
+  void ClearWhiteReferences(ReferenceQueue* cleared_references,
+                            IsHeapReferenceMarkedCallback* is_marked_callback, void* arg)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   void Dump(std::ostream& os) const
-        SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   bool IsEmpty() const {
     return list_ == nullptr;
   }