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

Source/core/rendering/RenderSearchField.cpp

 /**
  * Copyright (C) 2006, 2007, 2010 Apple Inc. All rights reserved.
  *           (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * 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.
@@ skipping 10 matching lines @@
  *
  */
 
 #include "config.h"
 #include "core/rendering/RenderSearchField.h"
 
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/shadow/ShadowElementNames.h"
 
-using namespace std;
-
 namespace WebCore {
 
 using namespace HTMLNames;
 
 // ----------------------------
 
 RenderSearchField::RenderSearchField(HTMLInputElement* element)
     : RenderTextControlSingleLine(element)
 {
     ASSERT(element->isSearchField());
@@ skipping 44 matching lines @@
     if (containerRenderer->logicalHeight() <= contentLogicalHeight())
         return;
 
     // A quirk for find-in-page box on Safari Windows.
     // http://webkit.org/b/63157
     LayoutUnit logicalHeightDiff = containerRenderer->logicalHeight() - contentLogicalHeight();
     containerRenderer->setLogicalTop(containerRenderer->logicalTop() - (logicalHeightDiff / 2 + layoutMod(logicalHeightDiff, 2)));
 }
 
 }