Move the SVG container code from rendering/svg to layout/svg.

Source/core/svg/SVGSymbolElement.cpp

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  *
  * 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 
 #include "core/svg/SVGSymbolElement.h"
 
 #include "core/SVGNames.h"
-#include "core/rendering/svg/RenderSVGHiddenContainer.h"
+#include "core/layout/svg/LayoutSVGHiddenContainer.h"
 
 namespace blink {
 
 inline SVGSymbolElement::SVGSymbolElement(Document& document)
     : SVGElement(SVGNames::symbolTag, document)
 {
     SVGFitToViewBox::initialize(this);
 }
 
 void SVGSymbolElement::trace(Visitor* visitor)
@@ skipping 10 matching lines @@
 }
 
 void SVGSymbolElement::svgAttributeChanged(const QualifiedName& attrName)
 {
     if (SVGFitToViewBox::isKnownAttribute(attrName))
         invalidateInstances();
 }
 
 LayoutObject* SVGSymbolElement::createRenderer(const LayoutStyle&)
 {
-    return new RenderSVGHiddenContainer(this);
+    return new LayoutSVGHiddenContainer(this);
 }
 
 }