Cleanup namespace usage from animation to exported in platform/

Source/platform/exported/WebSocketHandshakeRequestInfo.cpp

 /*
  * Copyright (C) 2013 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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "public/platform/WebSocketHandshakeRequestInfo.h"
 
 #include "platform/network/WebSocketHandshakeRequest.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebURL.h"
 
-using blink::WebSocketHandshakeRequest;
-
 namespace blink {
 
 WebSocketHandshakeRequestInfo::WebSocketHandshakeRequestInfo() : m_private(WebSocketHandshakeRequest::create())
 {
 }
 
 WebSocketHandshakeRequestInfo::~WebSocketHandshakeRequestInfo()
 {
     m_private.reset();
 }
 
 void WebSocketHandshakeRequestInfo::setURL(const WebURL& url)
 {
     m_private->setURL(url);
 }
 
 void WebSocketHandshakeRequestInfo::addHeaderField(const WebString& name, const WebString& value)
 {
     m_private->addAndMergeHeader(name, value);
 }
 
 void WebSocketHandshakeRequestInfo::setHeadersText(const WebString& text)
 {
     m_private->setHeadersText(text);
 }
 
 } // namespace blink