Remove sandbox on Windows.

sandbox/win/src/sid.h

-// Copyright (c) 2006-2008 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 SANDBOX_SRC_SID_H_
-#define SANDBOX_SRC_SID_H_
-
-#include <windows.h>
-
-namespace sandbox {
-
-// This class is used to hold and generate SIDS.
-class Sid {
- public:
-  // Constructors initializing the object with the SID passed.
-  // This is a converting constructor. It is not explicit.
-  Sid(const SID *sid);
-  Sid(WELL_KNOWN_SID_TYPE type);
-
-  // Returns sid_.
-  const SID *GetPSID() const;
-
- private:
-  BYTE sid_[SECURITY_MAX_SID_SIZE];
-};
-
-}  // namespace sandbox
-
-#endif  // SANDBOX_SRC_SID_H_