Change LayoutState to be stack-allocated

Source/core/rendering/RenderBoxModelObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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 2727 matching lines @@
     // FIXME: We may want to not antialias when scaled by an integral value,
     // and we may want to antialias when translated by a non-integral value.
     // FIXME: See crbug.com/382491. getCTM does not include scale factors applied at raster time, such
     // as device zoom.
     return !context->getCTM().isIdentityOrTranslationOrFlipped();
 }
 
 void RenderBoxModelObject::mapAbsoluteToLocalPoint(MapCoordinatesFlags mode, TransformState& transformState) const
 {
     // We don't expect to be called during layout.
-    ASSERT(!view() || !view()->layoutStateEnabled());
+    ASSERT(!view() || !view()->layoutStateCachedOffsetsEnabled());
 
     RenderObject* o = container();
     if (!o)
         return;
 
     if (o->isRenderFlowThread())
         transformState.move(o->columnOffset(LayoutPoint(transformState.mappedPoint())));
 
     o->mapAbsoluteToLocalPoint(mode, transformState);
 
@@ skipping 83 matching lines @@
     ASSERT(!beforeChild || toBoxModelObject == beforeChild->parent());
     for (RenderObject* child = startChild; child && child != endChild; ) {
         // Save our next sibling as moveChildTo will clear it.
         RenderObject* nextSibling = child->nextSibling();
         moveChildTo(toBoxModelObject, child, beforeChild, fullRemoveInsert);
         child = nextSibling;
     }
 }
 
 } // namespace WebCore