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

Source/core/html/HTMLFormControlElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.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 23 matching lines @@
 #include "core/html/ValidityState.h"
 #include "core/html/forms/ValidationMessage.h"
 #include "core/frame/UseCounter.h"
 #include "core/rendering/RenderBox.h"
 #include "core/rendering/RenderTheme.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
-using namespace std;
 
 HTMLFormControlElement::HTMLFormControlElement(const QualifiedName& tagName, Document& document, HTMLFormElement* form)
     : LabelableElement(tagName, document)
     , m_disabled(false)
     , m_isAutofilled(false)
     , m_isReadOnly(false)
     , m_isRequired(false)
     , m_ancestorDisabledState(AncestorDisabledStateUnknown)
     , m_dataListAncestorState(Unknown)
     , m_willValidateInitialized(false)
@@ skipping 448 matching lines @@
 
 void HTMLFormControlElement::setFocus(bool flag)
 {
     LabelableElement::setFocus(flag);
 
     if (!flag && wasChangedSinceLastFormControlChangeEvent())
         dispatchFormControlChangeEvent();
 }
 
 } // namespace Webcore