Change LayoutState to be stack-allocated

Source/core/rendering/RenderTableCell.cpp

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 360 matching lines @@
     mapRectToPaintInvalidationBacking(paintInvalidationContainer, r);
     return r;
 }
 
 void RenderTableCell::mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect& r, bool fixed) const
 {
     if (paintInvalidationContainer == this)
         return;
     r.setY(r.y());
     RenderView* v = view();
-    if ((!v || !v->canUseLayoutStateForContainer(paintInvalidationContainer)) && parent())
+    if ((!v || !v->canMapUsingLayoutStateForContainer(paintInvalidationContainer)) && parent())
         r.moveBy(-parentBox()->location()); // Rows are in the same coordinate space, so don't add their offset in.
     RenderBlockFlow::mapRectToPaintInvalidationBacking(paintInvalidationContainer, r, fixed);
 }
 
 LayoutUnit RenderTableCell::cellBaselinePosition() const
 {
     // <http://www.w3.org/TR/2007/CR-CSS21-20070719/tables.html#height-layout>: The baseline of a cell is the baseline of
     // the first in-flow line box in the cell, or the first in-flow table-row in the cell, whichever comes first. If there
     // is no such line box or table-row, the baseline is the bottom of content edge of the cell box.
     LayoutUnit firstLineBaseline = firstLineBoxBaseline();
@@ skipping 881 matching lines @@
 
 RenderTableCell* RenderTableCell::createAnonymousWithParentRenderer(const RenderObject* parent)
 {
     RenderTableCell* newCell = RenderTableCell::createAnonymous(&parent->document());
     RefPtr<RenderStyle> newStyle = RenderStyle::createAnonymousStyleWithDisplay(parent->style(), TABLE_CELL);
     newCell->setStyle(newStyle.release());
     return newCell;
 }
 
 } // namespace WebCore