mandoline filesystem: Rewrite using base::File.

components/filesystem/futimens.h

Index: components/filesystem/futimens.h
diff --git a/components/filesystem/futimens.h b/components/filesystem/futimens.h
deleted file mode 100644
index 8c91eb726bcd0ae8f08bb3d7d03eed059a2963b9..0000000000000000000000000000000000000000
--- a/components/filesystem/futimens.h
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright 2015 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_FILESYSTEM_FUTIMENS_H_
-#define COMPONENTS_FILESYSTEM_FUTIMENS_H_
-
-#include <sys/stat.h>
-
-#include "build/build_config.h"
-
-// For Android: The NDK/C library we currently build against doesn't have
-// |futimens()|, but has |utimensat()|. Provide the former (in terms of the
-// latter) for now. Remove this file and futimens_android.cc when |futimens()|
-// becomes generally available (see
-// https://android-review.googlesource.com/#/c/63321/).
-
-#if defined(OS_ANDROID)
-extern "C" {
-
-int futimens(int fd, const struct timespec times[2]);
-
-}  // extern "C"
-#endif
-
-#endif  // COMPONENTS_FILESYSTEM_FUTIMENS_H_