Merge back LayoutLayerModelObject into RenderBoxModelObject

Source/core/layout/svg/LayoutSVGResourceContainer.cpp

 /*
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 155 matching lines @@
     ASSERT(client);
     removeClientFromCache(client, false);
     m_clients.remove(client);
 }
 
 void LayoutSVGResourceContainer::addClientLayer(Node* node)
 {
     ASSERT(node);
     if (!node->renderer() || !node->renderer()->hasLayer())
         return;
-    m_clientLayers.add(toLayoutLayerModelObject(node->renderer())->layer());
+    m_clientLayers.add(toLayoutBoxModelObject(node->renderer())->layer());
     clearInvalidationMask();
 }
 
 void LayoutSVGResourceContainer::addClientLayer(Layer* client)
 {
     ASSERT(client);
     m_clientLayers.add(client);
     clearInvalidationMask();
 }
 
@@ skipping 103 matching lines @@
             // This will process the rest of the ancestors.
             toLayoutSVGResourceContainer(current)->removeAllClientsFromCache();
             break;
         }
 
         current = current->parent();
     }
 }
 
 }