Add DefaultListenSocket.

net/socket/transport_client_socket_unittest.cc

Index: net/socket/transport_client_socket_unittest.cc
diff --git a/net/socket/transport_client_socket_unittest.cc b/net/socket/transport_client_socket_unittest.cc
index 9ab9044af1740535e10fc88e1402cbf812afb9ab..0dec71c4fcb3c4bfa6dcb52f182d8999c100ec62 100644
--- a/net/socket/transport_client_socket_unittest.cc
+++ b/net/socket/transport_client_socket_unittest.cc
@@ -31,6 +31,8 @@ enum ClientSocketTestTypes {
   SCTP
 };
 
+}  // namespace
+
 class TransportClientSocketTest
     : public ListenSocket::ListenSocketDelegate,
       public ::testing::TestWithParam<ClientSocketTestTypes> {
@@ -445,6 +447,4 @@ TEST_P(TransportClientSocketTest, DISABLED_FullDuplex_WriteFirst) {
   EXPECT_GE(rv, 0);
 }
 
-}  // namespace
-
 }  // namespace net