Use a direct include of strings headers in remoting/.

remoting/protocol/content_description.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/protocol/content_description.h"
 
 #include "base/logging.h"
-#include "base/string_number_conversions.h"
+#include "base/strings/string_number_conversions.h"
 #include "remoting/base/constants.h"
 #include "remoting/protocol/authenticator.h"
 #include "remoting/protocol/name_value_map.h"
 #include "third_party/libjingle/source/talk/xmllite/xmlelement.h"
 
 using buzz::QName;
 using buzz::XmlElement;
 
 namespace remoting {
 namespace protocol {
@@ skipping 213 matching lines @@
   const XmlElement* child = Authenticator::FindAuthenticatorMessage(element);
   if (child)
     authenticator_message.reset(new XmlElement(*child));
 
   return scoped_ptr<ContentDescription>(
       new ContentDescription(config.Pass(), authenticator_message.Pass()));
 }
 
 }  // namespace protocol
 }  // namespace remoting