[NaCl SDK] Support non blocking TCP/UDP

native_client_sdk/src/libraries/nacl_io/mount_socket.cc

-// Copyright (c) 2013 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.
-
-#include "nacl_io/ossocket.h"
-#ifdef PROVIDES_SOCKET_API
-
-#include <errno.h>
-
-#include "nacl_io/mount_node_socket.h"
-#include "nacl_io/mount_socket.h"
-
-namespace nacl_io {
-
-MountSocket::MountSocket() {}
-
-Error MountSocket::Access(const Path& path, int a_mode) { return EACCES; }
-Error MountSocket::Open(const Path& path,
-                        int o_flags,
-                        ScopedMountNode* out_node) { return EACCES; }
-
-Error MountSocket::Unlink(const Path& path) { return EACCES; }
-Error MountSocket::Mkdir(const Path& path, int permissions) { return EACCES; }
-Error MountSocket::Rmdir(const Path& path) { return EACCES; }
-Error MountSocket::Remove(const Path& path) { return EACCES; }
-
-}  // namespace nacl_io
-#endif  // PROVIDES_SOCKET_API