Add infrastructure for partial layouts

Source/core/rendering/RenderTableCaption.h

 /*
  * Copyright (C) 2011 Robert Hogan <robert@roberthogan.net>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 17 matching lines @@
 
 class RenderTableCaption FINAL : public RenderBlock {
 public:
     explicit RenderTableCaption(Element*);
     virtual ~RenderTableCaption();
     virtual LayoutUnit containingBlockLogicalWidthForContent() const OVERRIDE;
 
 private:
     virtual bool isTableCaption() const OVERRIDE { return true; }
 
+    virtual bool supportsPartialLayout() const OVERRIDE { return false; }
+
     virtual void insertedIntoTree() OVERRIDE;
     virtual void willBeRemovedFromTree() OVERRIDE;
 
     RenderTable* table() const;
 };
 
 inline RenderTableCaption* toRenderTableCaption(RenderObject* object)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isTableCaption());
     return static_cast<RenderTableCaption*>(object);
 }
 
 inline const RenderTableCaption* toRenderTableCaption(const RenderObject* object)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isTableCaption());
     return static_cast<const RenderTableCaption*>(object);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toRenderTableCaption(const RenderTableCaption*);
 
 } // namespace WebCore
 
 #endif // RenderTableCaption_h