[NaCl SDK] Add nacl_mounts to NaCl SDK build. Experimental for now.

native_client_sdk/src/libraries/nacl_mounts/osdirent.h

Index: native_client_sdk/src/libraries/nacl_mounts/osdirent.h
diff --git a/native_client_sdk/src/libraries/nacl_mounts/osdirent.h b/native_client_sdk/src/libraries/nacl_mounts/osdirent.h
new file mode 100644
index 0000000000000000000000000000000000000000..bea9500c767f5989af5ddbe1d84410b0f0ad4b0a
--- /dev/null
+++ b/native_client_sdk/src/libraries/nacl_mounts/osdirent.h
@@ -0,0 +1,26 @@
+/* Copyright (c) 2012 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_MOUNTS_OSDIRENT_H_
+#define LIBRARIES_NACL_MOUNTS_OSDIRENT_H_
+
+#if defined(WIN32)
+
+#include <sys/types.h>
+#include "utils/macros.h"
+
+struct dirent {
+  _ino_t d_ino;
+  _off_t d_off;
+  unsigned short int d_reclen;
+  char d_name[256];
+};
+
+#else
+
+#include <dirent.h>
+
+#endif
+
+#endif  // LIBRARIES_NACL_MOUNTS_OSDIRENT_H_