Cleanup namespace usage in Source/web/Web[A-H]*.cpp

Source/web/WebHistoryItem.cpp

 /*
  * Copyright (C) 2009 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/network/FormData.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/WebFloatPoint.h"
 #include "public/platform/WebHTTPBody.h"
 #include "public/platform/WebPoint.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebVector.h"
 #include "public/web/WebSerializedScriptValue.h"
 #include "wtf/text/StringHash.h"
 
-using namespace blink;
-
 namespace blink {
 
 void WebHistoryItem::initialize()
 {
     m_private = HistoryItem::create();
 }
 
 void WebHistoryItem::reset()
 {
     m_private.reset();
@@ skipping 174 matching lines @@
     m_private = item;
     return *this;
 }
 
 WebHistoryItem::operator PassRefPtr<HistoryItem>() const
 {
     return m_private.get();
 }
 
 } // namespace blink