Added DISALLOW_COPY_AND_ASSIGN to disable copy/assign.

net/quic/quic_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.
 //
 // Some helpers for quic.
 
 #ifndef NET_QUIC_QUIC_UTILS_H_
 #define NET_QUIC_QUIC_UTILS_H_
 
 #include "net/base/int128.h"
@@ skipping 64 matching lines @@
   // "0x0020:  7fe2 0800 6bcb 0bc6 806e                 ....k....n\n"
   static std::string StringToHexASCIIDump(base::StringPiece in_buffer);
 
   static char* AsChars(unsigned char* data) {
     return reinterpret_cast<char*>(data);
   }
 
   static QuicPriority LowestPriority();
 
   static QuicPriority HighestPriority();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(QuicUtils);
 };
 
 // Utility function that returns an IOVector object wrapped around |str|.
 inline IOVector MakeIOVector(base::StringPiece str) {
   IOVector iov;
   iov.Append(const_cast<char*>(str.data()), str.size());
   return iov;
 }
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_UTILS_H_