*** FOR PROTOTYPE PURPOSES ONLY! NOT INTENDED FOR COMMIT! ***

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 25 matching lines @@
 class RenderReplica FINAL : public RenderBox {
 public:
     static RenderReplica* createAnonymous(Document*);
 
     virtual ~RenderReplica();
 
     virtual const char* renderName() const OVERRIDE { return "RenderReplica"; }
 
     virtual LayerType layerTypeRequired() const OVERRIDE { return NormalLayer; }
 
+    // This class is an easy demonstration of how to we'd switch over each class
+    // one by one.  The layout here is exceedingly simple and so there isn't much
+    // to do.  There are no children.
+    //
+    // NOTE: I've kept the regular layout method, but it would go away once we're
+    // done switching everything over.
     virtual void layout() OVERRIDE;
+    virtual bool isNonRecursiveLayout() const OVERRIDE { return true; }
+    virtual void preLayout() OVERRIDE;
 
     virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE;
 
 private:
     RenderReplica();
 
     virtual bool isReplica() const OVERRIDE { return true; }
     virtual void computePreferredLogicalWidths() OVERRIDE;
 
 };
 
 } // namespace WebCore
 
 #endif // RenderReplica_h