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

Source/core/rendering/RenderListMarker.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2010 Daniel Bates (dbates@intudata.com)
  *
  * 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 18 matching lines @@
 #include "core/fetch/ImageResource.h"
 #include "core/rendering/GraphicsContextAnnotator.h"
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderListItem.h"
 #include "core/rendering/RenderView.h"
 #include "platform/fonts/Font.h"
 #include "platform/graphics/GraphicsContextStateSaver.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/unicode/CharacterNames.h"
 
-using namespace std;
 using namespace WTF;
 using namespace Unicode;
 
 namespace WebCore {
 
 const int cMarkerPadding = 7;
 
 enum SequenceType { NumericSequence, AlphabeticSequence };
 
 static String toRoman(int number, bool upper)
@@ skipping 1789 matching lines @@
 
     if (clipToVisibleContent)
         mapRectToPaintInvalidationBacking(paintInvalidationContainer, rect);
     else
         rect = localToContainerQuad(FloatRect(rect), paintInvalidationContainer).enclosingBoundingBox();
 
     return rect;
 }
 
 } // namespace WebCore