Immediatelly promote marked objects

src/heap/scavenger-inl.h

Index: src/heap/scavenger-inl.h
diff --git a/src/heap/scavenger-inl.h b/src/heap/scavenger-inl.h
index 3b96f648f79a818121e2076d961687680aed2bf3..5c208540abf8c2d3c6edb2f8d0410b55d24d525c 100644
--- a/src/heap/scavenger-inl.h
+++ b/src/heap/scavenger-inl.h
@@ -68,9 +68,12 @@ void StaticScavengeVisitor::VisitPointer(Heap* heap, HeapObject* obj,
                                          Object** p) {
   Object* object = *p;
   if (!heap->InNewSpace(object)) return;
+  PromotionMode promotion_mode = heap->incremental_marking()->IsMarking()
+                                     ? PROMOTE_MARKED
+                                     : DEFAULT_PROMOTION;
   Scavenger::ScavengeObject(reinterpret_cast<HeapObject**>(p),
                             reinterpret_cast<HeapObject*>(object),
-                            DEFAULT_PROMOTION);
+                            promotion_mode);
 }
 
 }  // namespace internal