Smaller vtbls in RenderObject

Source/core/rendering/RenderReplica.h

 /*
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 32 matching lines @@
 
     virtual LayerType layerTypeRequired() const override { return NormalLayer; }
 
     virtual void layout() override;
 
     virtual void paint(PaintInfo&, const LayoutPoint&) override;
 
 private:
     RenderReplica();
 
-    virtual bool isReplica() const override { return true; }
+    virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectReplica || RenderBox::isOfType(type); }
     virtual void computePreferredLogicalWidths() override;
 
 };
 
 } // namespace blink
 
 #endif // RenderReplica_h