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

Source/core/html/forms/BaseDateAndTimeInputType.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 25 matching lines @@
 #include "platform/text/PlatformLocale.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/DateMath.h"
 #include "wtf/MathExtras.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 using blink::WebLocalizedString;
 using namespace HTMLNames;
-using namespace std;
 
 static const int msecPerMinute = 60 * 1000;
 static const int msecPerSecond = 1000;
 
 double BaseDateAndTimeInputType::valueAsDate() const
 {
     return valueAsDouble();
 }
 
 void BaseDateAndTimeInputType::setValueAsDate(double value, ExceptionState&) const
@@ skipping 127 matching lines @@
 {
     return element().isRequired() && value.isEmpty();
 }
 
 bool BaseDateAndTimeInputType::shouldShowFocusRingOnMouseFocus() const
 {
     return true;
 }
 
 } // namespace WebCore