Add methods to the QuicConnectionDebug visitor for tracking various

net/quic/quic_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.
 //
 // The entity that handles framing writes for a Quic client or server.
 // Each QuicSession will have a connection associated with it.
 //
 // On the server side, the Dispatcher handles the raw reads, and hands off
 // packets via ProcessUdpPacket for framing and processing.
 //
@@ skipping 119 matching lines @@
   virtual void OnPacketRetransmitted(
       QuicPacketSequenceNumber old_sequence_number,
       QuicPacketSequenceNumber new_sequence_number) {}
 
   // Called when a packet has been received, but before it is
   // validated or parsed.
   virtual void OnPacketReceived(const IPEndPoint& self_address,
                                 const IPEndPoint& peer_address,
                                 const QuicEncryptedPacket& packet) {}
 
+  // Called when a packet is recived with a connection id that does not
+  // match the ID of this connection.
+  virtual void OnIncorrectConnectionId(
+      QuicConnectionId connection_id) {}
+
+  // Called when an undecryptable packet has been received.
+  virtual void OnUndecryptablePacket() {}
+
+  // Called when a duplicate packet has been received.
+  virtual void OnDuplicatePacket(QuicPacketSequenceNumber sequence_number) {}
+
   // Called when the protocol version on the received packet doensn't match
   // current protocol version of the connection.
   virtual void OnProtocolVersionMismatch(QuicVersion version) {}
 
   // Called when the complete header of a packet has been parsed.
   virtual void OnPacketHeader(const QuicPacketHeader& header) {}
 
   // Called when a StreamFrame has been parsed.
   virtual void OnStreamFrame(const QuicStreamFrame& frame) {}
 
@@ skipping 626 matching lines @@
   // If non-empty this contains the set of versions received in a
   // version negotiation packet.
   QuicVersionVector server_supported_versions_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicConnection);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_H_