Change LayoutState to be stack-allocated

Source/core/rendering/svg/RenderSVGForeignObject.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) Research In Motion Limited 2010. 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 98 matching lines @@
     // FIXME: Investigate in size rounding issues
     // FIXME: Remove unnecessary rounding when layout is off ints: webkit.org/b/63656
     // FIXME: Is this correct for vertical writing mode?
     computedValues.m_extent = static_cast<int>(roundf(m_viewport.height()));
     computedValues.m_position = logicalTop;
 }
 
 void RenderSVGForeignObject::layout()
 {
     ASSERT(needsLayout());
-    ASSERT(!view()->layoutStateEnabled()); // RenderSVGRoot disables layoutState for the SVG rendering tree.
+    ASSERT(!view()->layoutStateCachedOffsetsEnabled()); // RenderSVGRoot disables layoutState for the SVG rendering tree.
 
     LayoutRepainter repainter(*this, SVGRenderSupport::checkForSVGRepaintDuringLayout(this));
     SVGForeignObjectElement* foreign = toSVGForeignObjectElement(node());
 
     bool updateCachedBoundariesInParents = false;
     if (m_needsTransformUpdate) {
         m_localTransform = foreign->animatedLocalTransform();
         m_needsTransformUpdate = false;
         updateCachedBoundariesInParents = true;
     }
@@ skipping 50 matching lines @@
         return false;
 
     // FOs establish a stacking context, so we need to hit-test all layers.
     HitTestLocation hitTestLocation(roundedLayoutPoint(localPoint));
     return RenderBlock::nodeAtPoint(request, result, hitTestLocation, LayoutPoint(), HitTestForeground)
         || RenderBlock::nodeAtPoint(request, result, hitTestLocation, LayoutPoint(), HitTestFloat)
         || RenderBlock::nodeAtPoint(request, result, hitTestLocation, LayoutPoint(), HitTestChildBlockBackgrounds);
 }
 
 }