Removing using declarations that import names in the C++ Standard library.

Source/core/rendering/RenderLayerModelObject.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, 2012 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 11 matching lines @@
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 #include "core/rendering/RenderLayerModelObject.h"
 
 #include "core/frame/LocalFrame.h"
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderView.h"
 
-using namespace std;
-
 namespace WebCore {
 
 bool RenderLayerModelObject::s_wasFloating = false;
 
 RenderLayerModelObject::RenderLayerModelObject(ContainerNode* node)
     : RenderObject(node)
 {
 }
 
 RenderLayerModelObject::~RenderLayerModelObject()
@@ skipping 157 matching lines @@
     return m_layer ? m_layer->hasCompositedLayerMapping() : false;
 }
 
 CompositedLayerMapping* RenderLayerModelObject::groupedMapping() const
 {
     return m_layer ? m_layer->groupedMapping() : 0;
 }
 
 } // namespace WebCore