Standardize usage of virtual/override/final specifiers.

net/tools/quic/quic_per_connection_packet_writer.h

 // Copyright 2014 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_QUIC_QUIC_PER_CONNECTION_PACKET_WRITER_H_
 #define NET_TOOLS_QUIC_QUIC_PER_CONNECTION_PACKET_WRITER_H_
 
 #include "net/quic/quic_connection.h"
 #include "net/quic/quic_packet_writer.h"
 
 namespace net {
 
 namespace tools {
 
 // A connection-specific packet writer that wraps a shared writer and keeps a
 // reference to the connection.
 class QuicPerConnectionPacketWriter : public QuicPacketWriter {
  public:
   // Does not take ownership of |shared_writer| or |connection|.
   QuicPerConnectionPacketWriter(QuicPacketWriter* shared_writer,
                                 QuicConnection* connection);
-  virtual ~QuicPerConnectionPacketWriter();
+  ~QuicPerConnectionPacketWriter() override;
 
   QuicPacketWriter* shared_writer() const { return shared_writer_; }
   QuicConnection* connection() const { return connection_; }
 
   // Default implementation of the QuicPacketWriter interface: Passes everything
   // to |shared_writer_|.
-  virtual WriteResult WritePacket(const char* buffer,
-                                  size_t buf_len,
-                                  const IPAddressNumber& self_address,
-                                  const IPEndPoint& peer_address) override;
-  virtual bool IsWriteBlockedDataBuffered() const override;
-  virtual bool IsWriteBlocked() const override;
-  virtual void SetWritable() override;
+  WriteResult WritePacket(const char* buffer,
+                          size_t buf_len,
+                          const IPAddressNumber& self_address,
+                          const IPEndPoint& peer_address) override;
+  bool IsWriteBlockedDataBuffered() const override;
+  bool IsWriteBlocked() const override;
+  void SetWritable() override;
 
  private:
   QuicPacketWriter* shared_writer_;  // Not owned.
   QuicConnection* connection_;  // Not owned.
 
   DISALLOW_COPY_AND_ASSIGN(QuicPerConnectionPacketWriter);
 };
 
 }  // namespace tools
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_PER_CONNECTION_PACKET_WRITER_H_