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 e4acac031a5d045adc7e70098d4e55770e96af20..a87b18be8ee8263dd86746e3d65d6c0949d9c721 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -277,7 +277,10 @@ class CodeFlusher {
     ProcessJSFunctionCandidates();
   }
 
-  void IteratePointersToFromSpace(ObjectVisitor* v);
+  inline void VisitListHeads(RootVisitor* v);
+
+  template <typename StaticVisitor>
+  inline void IteratePointersToFromSpace();
 
  private:
   void ProcessJSFunctionCandidates();