Cleanup namespace usage from animation to exported in platform/

Source/platform/exported/WebHTTPBody.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 16 matching lines @@
  * (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 "public/platform/WebHTTPBody.h"
 
 #include "platform/FileMetadata.h"
 #include "platform/network/FormData.h"
 
-using namespace blink;
-
 namespace blink {
 
 class WebHTTPBodyPrivate : public FormData {
 };
 
 void WebHTTPBody::initialize()
 {
     assign(static_cast<WebHTTPBodyPrivate*>(FormData::create().leakRef()));
 }
 
@@ skipping 144 matching lines @@
 }
 
 void WebHTTPBody::ensureMutable()
 {
     ASSERT(!isNull());
     if (!m_private->hasOneRef())
         assign(static_cast<WebHTTPBodyPrivate*>(m_private->copy().leakRef()));
 }
 
 } // namespace blink