Make the SpawnerCommunicator destructor virtual since it inherits from net::URLRequest::Delegate

net/test/base_test_server.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_TEST_BASE_TEST_SERVER_H_
 #define NET_TEST_BASE_TEST_SERVER_H_
 #pragma once
 
 #include <string>
 #include <utility>
@@ skipping 101 matching lines @@
 
   // The auth token to be used for TYPE_GDATA server.
   static const char kGDataAuthToken[];
 
   // Initialize a TestServer listening on a specific host (IP or hostname).
   BaseTestServer(Type type,  const std::string& host);
 
   // Initialize a HTTPS TestServer with a specific set of HTTPSOptions.
   explicit BaseTestServer(const HTTPSOptions& https_options);
 
-  ~BaseTestServer();
-
   // Returns the host port pair used by current Python based test server only
   // if the server is started.
   const HostPortPair& host_port_pair() const;
 
   const FilePath& document_root() const { return document_root_; }
   const base::DictionaryValue& server_data() const;
   std::string GetScheme() const;
   bool GetAddressList(AddressList* address_list) const WARN_UNUSED_RESULT;
 
   GURL GetURL(const std::string& path) const;
 
   GURL GetURLWithUser(const std::string& path,
                       const std::string& user) const;
 
   GURL GetURLWithUserAndPassword(const std::string& path,
                                  const std::string& user,
                                  const std::string& password) const;
 
   static bool GetFilePathWithReplacements(
       const std::string& original_path,
       const std::vector<StringPair>& text_to_replace,
       std::string* replacement_path);
 
  protected:
+  virtual ~BaseTestServer();
   Type type() const { return type_; }
 
   // Gets port currently assigned to host_port_pair_ without checking
   // whether it's available (server started) or not.
   uint16 GetPort();
 
   // Sets |port| as the actual port used by Python based test server.
   void SetPort(uint16 port);
 
   // Set up internal status when the server is started.
@@ skipping 46 matching lines @@
 
   scoped_ptr<ScopedPortException> allowed_port_;
 
   DISALLOW_COPY_AND_ASSIGN(BaseTestServer);
 };
 
 }  // namespace net
 
 #endif  // NET_TEST_BASE_TEST_SERVER_H_