[heap] Remove LocalStoreBuffer and add slots in parallel

src/heap/mark-compact.h

Index: src/heap/mark-compact.h
diff --git a/src/heap/mark-compact.h b/src/heap/mark-compact.h
index 9ecd73ab8c8463b27503ddad658a447a148b0ac8..a1be7b8fca365df004f9d83afc49a49da14c718e 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -25,7 +25,6 @@ class CodeFlusher;
 class MarkCompactCollector;
 class MarkingVisitor;
 class RootMarkingVisitor;
-class LocalSlotsBuffer;
 
 class Marking : public AllStatic {
  public:
@@ -487,9 +486,7 @@ class MarkCompactCollector {
   void UpdateSlotsRecordedIn(SlotsBuffer* buffer);
 
   void MigrateObject(HeapObject* dst, HeapObject* src, int size,
-                     AllocationSpace to_old_space,
-                     LocalSlotsBuffer* old_to_old_slots,
-                     LocalSlotsBuffer* old_to_new_slots);
+                     AllocationSpace to_old_space);
 
   void InvalidateCode(Code* code);
 
@@ -811,11 +808,6 @@ class MarkCompactCollector {
   // swept in parallel.
   void ParallelSweepSpacesComplete();
 
-  // Updates store buffer and slot buffer for a pointer in a migrating object.
-  void RecordMigratedSlot(Object* value, Address slot,
-                          LocalSlotsBuffer* old_to_old_slots,
-                          LocalSlotsBuffer* old_to_new_slots);
-
 #ifdef DEBUG
   friend class MarkObjectVisitor;
   static void VisitObject(HeapObject* obj);