Non-SFI mode: Remove old Non-SFI code.

components/nacl/loader/nonsfi/irt_util.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 COMPONENTS_NACL_LOADER_NONSFI_IRT_UTIL_H_
-#define COMPONENTS_NACL_LOADER_NONSFI_IRT_UTIL_H_
-
-#include <errno.h>
-
-namespace nacl {
-namespace nonsfi {
-
-// For IRT implementation, the following simple pattern is commonly used.
-//
-//   if (syscall(...) < 0)
-//     return errno;
-//   return 0;
-//
-// This function is a utility to write it in a line as follows:
-//
-//   return CheckError(syscall(...));
-inline int CheckError(int result) {
-  return result < 0 ? errno : 0;
-}
-
-// For IRT implementation, another but a similar pattern is also commonly used.
-//
-//   T result = syscall(...);
-//   if (result < 0)
-//     return errno;
-//   *output = result;
-//   return 0;
-//
-// This function is a utility to write it in a line as follows:
-//
-//   retrun CheckErrorWithResult(syscall(...), output);
-//
-// Here, T1 must be a signed integer value, and T2 must be convertible from
-// T1.
-template<typename T1, typename T2>
-int CheckErrorWithResult(const T1& result, T2* out) {
-  if (result < 0)
-    return errno;
-
-  *out = result;
-  return 0;
-}
-
-}  // namespace nonsfi
-}  // namespace nacl
-
-#endif  // COMPONENTS_NACL_LOADER_NONSFI_IRT_UTIL_H_