Add a host parameter to ObjectVisitor methods.

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 44fdb185cf2d536124c3ddb9860cf929cabf830b..f0db14e433a4ed57417b02b7d19073c1d1b81873 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -2489,7 +2489,8 @@ class AlwaysAllocateScope {
 // objects in a heap space but above the allocation pointer.
 class VerifyPointersVisitor : public ObjectVisitor, public RootVisitor {
  public:
-  inline void VisitPointers(Object** start, Object** end) override;
+  inline void VisitPointers(HeapObject* host, Object** start,
+                            Object** end) override;
   inline void VisitRootPointers(Root root, Object** start,
                                 Object** end) override;