[NaCl SDK] Enable select/poll on TTY nodes.

native_client_sdk/src/libraries/nacl_io_test/mount_dev_mock.h

+// 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.
+
+#ifndef LIBRARIES_NACL_IO_TEST_MOUNT_NODE_MOCK_H_
+#define LIBRARIES_NACL_IO_TEST_MOUNT_NODE_MOCK_H_
+
+#include "gmock/gmock.h"
+
+#include "nacl_io/mount.h"
+#include "nacl_io/mount_dev.h"
+
+#define NULL_NODE ((MountNode*) NULL)
+
+class MountDevMock : public nacl_io::MountDev {
+ public:
+  MountDevMock() {
+    nacl_io::StringMap_t map;
+    Init(1, map, NULL);
+  }
+  int num_nodes() { return (int) inode_pool_.size(); }
+};
+
+#endif  // LIBRARIES_NACL_IO_TEST_MOUNT_NODE_MOCK_H_