Added DISALLOW_COPY_AND_ASSIGN to disable copy/assign.

net/tools/quic/spdy_utils.h

 // 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.
 
 #ifndef NET_TOOLS_QUIC_SPDY_UTILS_H_
 #define NET_TOOLS_QUIC_SPDY_UTILS_H_
 
 #include <string>
 
 #include "net/spdy/spdy_framer.h"
@@ skipping 19 matching lines @@
                                        BalsaHeaders* response_headers);
 
   static SpdyHeaderBlock RequestHeadersToSpdyHeaders(
       const BalsaHeaders& request_headers);
 
   static SpdyHeaderBlock ResponseHeadersToSpdyHeaders(
       const BalsaHeaders& response_headers);
 
   static std::string SerializeUncompressedHeaders(
       const SpdyHeaderBlock& headers);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SpdyUtils);
 };
 
 }  // namespace tools
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_SPDY_UTILS_H_