Remove single line virtual methods that are not overridden anywhere.

net/tools/quic/quic_client.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 toy client, which connects to a specified port and sends QUIC
 // request to that endpoint.
 
 #ifndef NET_TOOLS_QUIC_QUIC_CLIENT_H_
 #define NET_TOOLS_QUIC_QUIC_CLIENT_H_
 
@@ skipping 175 matching lines @@
   // Implements ProcessPacketInterface. This will be called for each received
   // packet.
   void ProcessPacket(const IPEndPoint& self_address,
                      const IPEndPoint& peer_address,
                      const QuicEncryptedPacket& packet) override;
 
   QuicClientPushPromiseIndex* push_promise_index() {
     return &push_promise_index_;
   }
 
- protected:
   virtual QuicPacketWriter* CreateQuicPacketWriter();
-  virtual QuicPacketReader* CreateQuicPacketReader();
 
   // If |fd| is an open UDP socket, unregister and close it. Otherwise, do
   // nothing.
   virtual void CleanUpUDPSocket(int fd);
 
   // Unregister and close all open UDP sockets.
   virtual void CleanUpAllUDPSockets();
 
   EpollServer* epoll_server() { return epoll_server_; }
 
@@ skipping 103 matching lines @@
   QuicPacketReader* packet_reader_;
 
   std::unique_ptr<ClientQuicDataToResend> push_promise_data_to_resend_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicClient);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_CLIENT_H_