Add a host parameter to ObjectVisitor methods.

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 ed60c2bf1a70638454a86c20b50b74723ecd20f4..2a68da17ee25256de1b99bdfac02c347a672f244 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -275,7 +275,10 @@ class CodeFlusher {
     ProcessJSFunctionCandidates();
   }
 
-  void IteratePointersToFromSpace(ObjectVisitor* v);
+  inline void VisitListHeads(RootVisitor* v);
+
+  template <typename StaticVisitor>
+  inline void IteratePointersToFromSpace();
 
  private:
   void ProcessJSFunctionCandidates();