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

components/nacl/loader/nonsfi/irt_random.cc

-// 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.
-
-#include <errno.h>
-#include <unistd.h>
-
-#include "base/logging.h"
-#include "components/nacl/loader/nonsfi/irt_interfaces.h"
-#include "components/nacl/loader/nonsfi/irt_util.h"
-
-namespace nacl {
-namespace nonsfi {
-namespace {
-
-// FD for urandom.
-int secure_random_fd = -1;
-
-int IrtGetRandomBytes(void* buf, size_t count, size_t* nread) {
-  DCHECK_NE(secure_random_fd, -1);
-  return CheckErrorWithResult(read(secure_random_fd, buf, count),
-                              nread);
-}
-
-}  // namespace
-
-const nacl_irt_random kIrtRandom = {
-  IrtGetRandomBytes
-};
-
-void SetUrandomFd(int fd) {
-  DCHECK_EQ(secure_random_fd, -1);
-  secure_random_fd = fd;
-}
-
-}  // namespace nonsfi
-}  // namespace nacl