Remove sandbox on Windows.

sandbox/win/src/process_mitigations_win32k_policy.h

-// Copyright 2014 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_PROCESS_MITIGATIONS_WIN32K_POLICY_H_
-#define SANDBOX_SRC_PROCESS_MITIGATIONS_WIN32K_POLICY_H_
-
-#include "sandbox/win/src/crosscall_server.h"
-#include "sandbox/win/src/policy_low_level.h"
-#include "sandbox/win/src/sandbox_policy.h"
-
-namespace sandbox {
-
-enum EvalResult;
-
-// This class centralizes most of the knowledge related to the process
-// mitigations Win32K lockdown policy.
-class ProcessMitigationsWin32KLockdownPolicy {
- public:
-  // Creates the required low-level policy rules to evaluate a high-level
-  // policy rule for the Win32K process mitigation policy.
-  // name is the object name, semantics is the desired semantics for the
-  // open or create and policy is the policy generator to which the rules are
-  // going to be added.
-  static bool GenerateRules(const wchar_t* name,
-                            TargetPolicy::Semantics semantics,
-                            LowLevelPolicy* policy);
-};
-
-}  // namespace sandbox
-
-#endif  // SANDBOX_SRC_PROCESS_MITIGATIONS_WIN32K_POLICY_H_
-
-