Move UseNonBlockingIO from a windows-only method

net/udp/udp_socket_unittest.cc

Index: net/udp/udp_socket_unittest.cc
diff --git a/net/udp/udp_socket_unittest.cc b/net/udp/udp_socket_unittest.cc
index 860b4a3ced41f8983dd7b47d82fcaabf4995d331..2a4e60f5adcc46ef25b4ed27cb09c72803f8c415 100644
--- a/net/udp/udp_socket_unittest.cc
+++ b/net/udp/udp_socket_unittest.cc
@@ -170,10 +170,8 @@ void UDPSocketTest::ConnectTest(bool use_nonblocking_io) {
   TestNetLog server_log;
   std::unique_ptr<UDPServerSocket> server(
       new UDPServerSocket(&server_log, NetLog::Source()));
-#if defined(OS_WIN)
   if (use_nonblocking_io)
     server->UseNonBlockingIO();
-#endif
   server->AllowAddressReuse();
   int rv = server->Listen(bind_address);
   ASSERT_THAT(rv, IsOk());
@@ -185,10 +183,8 @@ void UDPSocketTest::ConnectTest(bool use_nonblocking_io) {
   std::unique_ptr<UDPClientSocket> client(
       new UDPClientSocket(DatagramSocket::DEFAULT_BIND, RandIntCallback(),
                           &client_log, NetLog::Source()));
-#if defined(OS_WIN)
   if (use_nonblocking_io)
     client->UseNonBlockingIO();
-#endif
 
   rv = client->Connect(server_address);
   EXPECT_THAT(rv, IsOk());