[heap] Concurrent slot filtering in sweeper threads.

src/heap/remembered-set.h

Index: src/heap/remembered-set.h
diff --git a/src/heap/remembered-set.h b/src/heap/remembered-set.h
index 74791b926bb7772a4646dcec507abbe561c7f85b..ae98afb8a7fb1bc9cf078d77ccf10a03bc452c87 100644
--- a/src/heap/remembered-set.h
+++ b/src/heap/remembered-set.h
@@ -203,6 +203,9 @@ class RememberedSet {
   // must be called before sweeping when mark bits are still intact.
   static void ClearInvalidSlots(Heap* heap);
 
+  static void ClearInvalidSlots(Heap* heap, MemoryChunk* chunk);
+  static void ClearInvalidTypedSlots(Heap* heap, MemoryChunk* chunk);
+
   static void VerifyValidSlots(Heap* heap);
 
  private: