Allow IP migration.

net/tools/quic/quic_dispatcher.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.
 //
 // A server side dispatcher which dispatches a given client's data to their
 // stream.
 
 #ifndef NET_TOOLS_QUIC_QUIC_DISPATCHER_H_
 #define NET_TOOLS_QUIC_QUIC_DISPATCHER_H_
 
@@ skipping 69 matching lines @@
                           QuicErrorCode error,
                           const std::string& error_details) override;
 
   // Queues the blocked writer for later resumption.
   void OnWriteBlocked(QuicBlockedWriterInterface* blocked_writer) override;
 
   // Called whenever the time wait list manager adds a new connection to the
   // time-wait list.
   void OnConnectionAddedToTimeWaitList(QuicConnectionId connection_id) override;
 
+  void OnPacketBeingDispatchedToSession(
+      QuicServerSessionBase* session) override {}
+
   typedef std::unordered_map<QuicConnectionId, QuicServerSessionBase*>
       SessionMap;
 
   const SessionMap& session_map() const { return session_map_; }
 
   // Deletes all sessions on the closed session list and clears the list.
   virtual void DeleteSessions();
 
   // The largest packet number we expect to receive with a connection
   // ID for a connection that is not established yet.  The current design will
@@ skipping 249 matching lines @@
   // A backward counter of how many new sessions can be create within current
   // event loop. When reaches 0, it means can't create sessions for now.
   int16_t new_sessions_allowed_per_event_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicDispatcher);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_DISPATCHER_H_