Virtual destructors should have virtual keyword.

net/tools/flip_server/sm_connection.h

 // Copyright (c) 2009 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_FLIP_SERVER_SM_CONNECTION_H_
 #define NET_TOOLS_FLIP_SERVER_SM_CONNECTION_H_
 
 #include <arpa/inet.h>  // in_addr_t
 #include <time.h>
 
@@ skipping 14 matching lines @@
 struct SSLState;
 
 // A frame of data to be sent.
 class DataFrame {
  public:
   const char* data;
   size_t size;
   bool delete_when_done;
   size_t index;
   DataFrame() : data(NULL), size(0), delete_when_done(false), index(0) {}
-  virtual ~DataFrame() {
-    if (delete_when_done)
-      delete[] data;
-  }
+  virtual ~DataFrame();
 };
 
 typedef std::list<DataFrame*> OutputList;
 
 class SMConnection : public SMConnectionInterface,
                      public EpollCallbackInterface,
                      public NotifierInterface {
  public:
   virtual ~SMConnection();
 
@@ skipping 104 matching lines @@
   size_t max_bytes_sent_per_dowrite_;
 
   SSL* ssl_;
 
   static bool force_spdy_;
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_FLIP_SERVER_SM_CONNECTION_H_
-