Standardize usage of virtual/override/final in remoting/

remoting/host/cast_extension.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 REMOTING_HOST_CAST_EXTENSION_H_
 #define REMOTING_HOST_CAST_EXTENSION_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 14 matching lines @@
 struct NetworkSettings;
 }  // namespace protocol
 
 // CastExtension extends HostExtension to enable WebRTC support.
 class CastExtension : public HostExtension {
  public:
   CastExtension(
       scoped_refptr<base::SingleThreadTaskRunner> network_task_runner,
       scoped_refptr<net::URLRequestContextGetter> url_request_context_getter,
       const protocol::NetworkSettings& network_settings);
-  virtual ~CastExtension();
+  ~CastExtension() override;
 
   // HostExtension interface.
-  virtual std::string capability() const override;
-  virtual scoped_ptr<HostExtensionSession> CreateExtensionSession(
+  std::string capability() const override;
+  scoped_ptr<HostExtensionSession> CreateExtensionSession(
       ClientSessionControl* client_session_control,
       protocol::ClientStub* client_stub) override;
 
  private:
   scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
   const protocol::NetworkSettings& network_settings_;
 
   DISALLOW_COPY_AND_ASSIGN(CastExtension);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_CAST_EXTENSION_H_