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

Source/core/rendering/RenderTextControlSingleLine.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 17 matching lines @@
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/editing/FrameSelection.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/shadow/ShadowElementNames.h"
 #include "core/rendering/HitTestResult.h"
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderTheme.h"
 #include "platform/PlatformKeyboardEvent.h"
 #include "platform/fonts/SimpleFontData.h"
 
-using namespace std;
-
 namespace WebCore {
 
 using namespace HTMLNames;
 
 RenderTextControlSingleLine::RenderTextControlSingleLine(HTMLInputElement* element)
     : RenderTextControl(element)
     , m_shouldDrawCapsLockIndicator(false)
     , m_desiredInnerEditorLogicalHeight(-1)
 {
 }
@@ skipping 369 matching lines @@
     if (innerEditorElement())
         innerEditorElement()->setScrollTop(newTop);
 }
 
 HTMLInputElement* RenderTextControlSingleLine::inputElement() const
 {
     return toHTMLInputElement(node());
 }
 
 }