Change LayoutState to be stack-allocated

Source/core/rendering/RenderDeprecatedFlexibleBox.cpp

 /*
  * This file is part of the render object implementation for KHTML.
  *
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003 Apple Computer, Inc.
  *
  * 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
@@ skipping 245 matching lines @@
 void RenderDeprecatedFlexibleBox::layoutBlock(bool relayoutChildren)
 {
     ASSERT(needsLayout());
 
     if (!relayoutChildren && simplifiedLayout())
         return;
 
     LayoutRepainter repainter(*this, checkForPaintInvalidationDuringLayout());
 
     {
-        // LayoutStateMaintainer needs this deliberate scope to pop before repaint
-        LayoutStateMaintainer statePusher(*this, locationOffset());
+        // LayoutState needs this deliberate scope to pop before repaint
+        LayoutState state(*this, locationOffset());
 
         LayoutSize previousSize = size();
 
         updateLogicalWidth();
         updateLogicalHeight();
 
         FastTextAutosizer::LayoutScope fastTextAutosizerLayoutScope(this);
 
         if (previousSize != size()
             || (parent()->isDeprecatedFlexibleBox() && parent()->style()->boxOrient() == HORIZONTAL
@@ skipping 806 matching lines @@
     if (isPseudoElement())
         return "RenderDeprecatedFlexibleBox (generated)";
     if (isAnonymous())
         return "RenderDeprecatedFlexibleBox (generated)";
     if (isRelPositioned())
         return "RenderDeprecatedFlexibleBox (relative positioned)";
     return "RenderDeprecatedFlexibleBox";
 }
 
 } // namespace WebCore