Cleanup namespace usage in Source/web/Web[I-Z]*.cpp

Source/web/WebIDBKeyRange.cpp

 /*
  * Copyright (C) 2011 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:
  *
  * 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 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "public/platform/WebIDBKeyRange.h"
 
 #include "modules/indexeddb/IDBKey.h"
 #include "modules/indexeddb/IDBKeyRange.h"
 #include "public/platform/WebIDBKey.h"
 
-using namespace blink;
-
 namespace blink {
 
 void WebIDBKeyRange::assign(const WebIDBKeyRange& other)
 {
     m_private = other.m_private;
 }
 
 void WebIDBKeyRange::assign(const WebIDBKey& lower, const WebIDBKey& upper, bool lowerOpen, bool upperOpen)
 {
     if (!lower.isValid() && !upper.isValid())
@@ skipping 41 matching lines @@
     m_private = value;
     return *this;
 }
 
 WebIDBKeyRange::operator IDBKeyRange*() const
 {
     return m_private.get();
 }
 
 } // namespace blink