GTTF: Add missing virtual destructors.

net/http/http_pipelined_connection.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_HTTP_HTTP_PIPELINED_CONNECTION_H_
 #define NET_HTTP_HTTP_PIPELINED_CONNECTION_H_
 
 #include "net/base/net_export.h"
 #include "net/base/net_log.h"
 #include "net/socket/ssl_client_socket.h"
@@ skipping 12 matching lines @@
   enum Feedback {
     OK,
     PIPELINE_SOCKET_ERROR,
     OLD_HTTP_VERSION,
     MUST_CLOSE_CONNECTION,
     AUTHENTICATION_REQUIRED,
   };
 
   class Delegate {
    public:
+    virtual ~Delegate() {}
+
     // Called when a pipeline has newly available capacity. This may be because
     // the first request has been sent and the pipeline is now active. Or, it
     // may be because a request successfully completed.
     virtual void OnPipelineHasCapacity(HttpPipelinedConnection* pipeline) = 0;
 
     // Called every time a pipeline receives headers. Lets the delegate know if
     // the headers indicate that pipelining can be used.
     virtual void OnPipelineFeedback(HttpPipelinedConnection* pipeline,
                                     Feedback feedback) = 0;
   };
@@ skipping 41 matching lines @@
   // True if this connection was NPN negotiated.
   virtual bool was_npn_negotiated() const = 0;
 
   // Protocol negotiated with the server.
   virtual NextProto protocol_negotiated() const = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_PIPELINED_CONNECTION_H_