Removing "using" delclarations that import names from the STL library.

Source/core/accessibility/AXTableHeaderContainer.cpp

 /*
  * Copyright (C) 2008 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 12 matching lines @@
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/accessibility/AXTableHeaderContainer.h"
 
 
-using namespace std;
 
 namespace WebCore {
 
 AXTableHeaderContainer::AXTableHeaderContainer()
 {
 }
 
 AXTableHeaderContainer::~AXTableHeaderContainer()
 {
 }
@@ skipping 26 matching lines @@
         return;
 
     toAXTable(m_parent)->columnHeaders(m_children);
 
     unsigned length = m_children.size();
     for (unsigned k = 0; k < length; ++k)
         m_headerRect.unite(m_children[k]->elementRect());
 }
 
 } // namespace WebCore