clang/win: Fix style plugin warnings in debug builds.

net/http/http_auth_challenge_tokenizer.h

 // Copyright 2014 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_HTTP_HTTP_AUTH_CHALLENGE_TOKENIZER_
 #define NET_HTTP_HTTP_AUTH_CHALLENGE_TOKENIZER_
 
 #include <string>
 
 #include "net/base/net_export.h"
 #include "net/http/http_util.h"
 
 namespace net {
 
 // Breaks up a challenge string into the the auth scheme and parameter list,
 // according to RFC 2617 Sec 1.2:
 //     challenge = auth-scheme 1*SP 1#auth-param
 //
 // Depending on the challenge scheme, it may be appropriate to interpret the
 // parameters as either a base-64 encoded string or a comma-delimited list
 // of name-value pairs. param_pairs() and base64_param() methods are provided
 // to support either usage.
 class NET_EXPORT_PRIVATE HttpAuthChallengeTokenizer {
  public:
   HttpAuthChallengeTokenizer(std::string::const_iterator begin,
                              std::string::const_iterator end);
+  ~HttpAuthChallengeTokenizer();
 
   // Get the original text.
   std::string challenge_text() const {
     return std::string(begin_, end_);
   }
 
   // Get the auth scheme of the challenge.
   std::string::const_iterator scheme_begin() const { return scheme_begin_; }
   std::string::const_iterator scheme_end() const { return scheme_end_; }
   std::string scheme() const {
@@ skipping 15 matching lines @@
   std::string::const_iterator scheme_begin_;
   std::string::const_iterator scheme_end_;
 
   std::string::const_iterator params_begin_;
   std::string::const_iterator params_end_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_AUTH_CHALLENGE_TOKENIZER_