Revert 156550 - Add sandbox support for Windows process mitigations

sandbox/win/src/process_mitigations.h

-// 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 SANDBOX_SRC_WIN_PROCESS_MITIGATIONS_H_
-#define SANDBOX_SRC_WIN_PROCESS_MITIGATIONS_H_
-
-#include <windows.h>
-
-#include "base/basictypes.h"
-#include "sandbox/win/src/security_level.h"
-
-namespace sandbox {
-
-// Sets the mitigation policy for the current process, ignoring any settings
-// that are invalid for the current version of Windows.
-bool ApplyProcessMitigationsToCurrentProcess(MitigationFlags flags);
-
-// Returns the flags that must be enforced after startup for the current OS
-// version.
-MitigationFlags FilterPostStartupProcessMitigations(MitigationFlags flags);
-
-// Converts sandbox flags to the PROC_THREAD_ATTRIBUTE_SECURITY_CAPABILITIES
-// policy flags used by UpdateProcThreadAttribute(). The size field varies
-// between a 32-bit and a 64-bit type based on the exact build and version of
-// Windows, so the returned size must be passed to UpdateProcThreadAttribute().
-void ConvertProcessMitigationsToPolicy(MitigationFlags flags,
-                                       DWORD64* policy_flags, size_t* size);
-
-// Adds mitigations that need to be performed on the suspended target process
-// before execution begins.
-bool ApplyProcessMitigationsToSuspendedProcess(HANDLE process,
-                                               MitigationFlags flags);
-
-// Returns true if all the supplied flags can be set after a process starts.
-bool CanSetProcessMitigationsPostStartup(MitigationFlags flags);
-
-// Returns true if all the supplied flags can be set before a process starts.
-bool CanSetProcessMitigationsPreStartup(MitigationFlags flags);
-
-}  // namespace sandbox
-
-#endif  // SANDBOX_SRC_WIN_PROCESS_MITIGATIONS_H_
-