Virtual destructors should have virtual keyword.

net/http/http_stream_parser.h

 // Copyright (c) 2011 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_STREAM_PARSER_H_
 #define NET_HTTP_HTTP_STREAM_PARSER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 19 matching lines @@
  public:
   // Any data in |read_buffer| will be used before reading from the socket
   // and any data left over after parsing the stream will be put into
   // |read_buffer|.  The left over data will start at offset 0 and the
   // buffer's offset will be set to the first free byte. |read_buffer| may
   // have its capacity changed.
   HttpStreamParser(ClientSocketHandle* connection,
                    const HttpRequestInfo* request,
                    GrowableIOBuffer* read_buffer,
                    const BoundNetLog& net_log);
-  ~HttpStreamParser();
+  virtual ~HttpStreamParser();
 
   // These functions implement the interface described in HttpStream with
   // some additional functionality
   int SendRequest(const std::string& request_line,
                   const HttpRequestHeaders& headers,
                   UploadDataStream* request_body,
                   HttpResponseInfo* response, CompletionCallback* callback);
 
   int ReadResponseHeaders(CompletionCallback* callback);
 
@@ skipping 146 matching lines @@
   size_t chunk_length_;
   size_t chunk_length_without_encoding_;
   bool sent_last_chunk_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpStreamParser);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_STREAM_PARSER_H_