Standardize usage of virtual/override/final in extensions/

extensions/browser/api/cast_channel/cast_socket.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 EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_SOCKET_H_
 #define EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_SOCKET_H_
 
 #include <queue>
 #include <string>
 
@@ skipping 62 matching lines @@
   // the socket.  |channel_auth| must not be CHANNEL_AUTH_NONE.
   CastSocket(const std::string& owner_extension_id,
              const net::IPEndPoint& ip_endpoint,
              ChannelAuthType channel_auth,
              CastSocket::Delegate* delegate,
              net::NetLog* net_log,
              const base::TimeDelta& connect_timeout,
              const scoped_refptr<Logger>& logger);
 
   // Ensures that the socket is closed.
-  virtual ~CastSocket();
+  ~CastSocket() override;
 
   // The IP endpoint for the destination of the channel.
   const net::IPEndPoint& ip_endpoint() const { return ip_endpoint_; }
 
   // The authentication level requested for the channel.
   ChannelAuthType channel_auth() const { return channel_auth_; }
 
   // Returns a cast:// or casts:// URL for the channel endpoint.
   // For backwards compatibility.
   std::string CastUrl() const;
@@ skipping 242 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(CastSocketTest, TestReadHeaderParseError);
   FRIEND_TEST_ALL_PREFIXES(CastSocketTest, TestReadMany);
   FRIEND_TEST_ALL_PREFIXES(CastSocketTest, TestWriteErrorLargeMessage);
   DISALLOW_COPY_AND_ASSIGN(CastSocket);
 };
 }  // namespace cast_channel
 }  // namespace core_api
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_SOCKET_H_