Update from chromium https://crrev.com/301725/

net/tools/quic/test_tools/server_thread.h

 // Copyright 2013 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_SERVER_THREAD_H_
 #define NET_TOOLS_QUIC_SERVER_THREAD_H_
 
 #include "base/threading/simple_thread.h"
 #include "net/base/ip_endpoint.h"
 #include "net/quic/quic_config.h"
 #include "net/tools/quic/quic_server.h"
 
 namespace net {
 namespace tools {
 namespace test {
 
 // Simple wrapper class to run server in a thread.
 class ServerThread : public base::SimpleThread {
  public:
   ServerThread(QuicServer* server,
                IPEndPoint address,
                bool strike_register_no_startup_period);
 
-  virtual ~ServerThread();
+  ~ServerThread() override;
 
   // Prepares the server, but does not start accepting connections. Useful for
   // injecting mocks.
   void Initialize();
 
   // Runs the event loop. Will initialize if necessary.
-  virtual void Run() override;
+  void Run() override;
 
   // Waits for the handshake to be confirmed for the first session created.
   void WaitForCryptoHandshakeConfirmed();
 
   // Pauses execution of the server until Resume() is called.  May only be
   // called once.
   void Pause();
 
   // Resumes execution of the server after Pause() has been called.  May only
   // be called once.
@@ skipping 29 matching lines @@
   bool initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(ServerThread);
 };
 
 }  // namespace test
 }  // namespace tools
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_SERVER_THREAD_H_