Update {virtual,override,final} to follow C++11 style in net.

net/test/spawned_test_server/remote_test_server.h

Index: net/test/spawned_test_server/remote_test_server.h
diff --git a/net/test/spawned_test_server/remote_test_server.h b/net/test/spawned_test_server/remote_test_server.h
index de12e4ebe44ecd28122dad4656ca0e9d6282618b..a8b8bb2c23591cb008266faed5afd7f50e02d4ef 100644
--- a/net/test/spawned_test_server/remote_test_server.h
+++ b/net/test/spawned_test_server/remote_test_server.h
@@ -29,7 +29,7 @@ class RemoteTestServer : public BaseTestServer {
                    const SSLOptions& ssl_options,
                    const base::FilePath& document_root);
 
-  virtual ~RemoteTestServer();
+  ~RemoteTestServer() override;
 
   // Starts the Python test server on the host, instead of on the device, and
   // blocks until the server is ready.