Implement ScopedFD in terms of ScopedGeneric.

base/BUILD.gn

 # Copyright (c) 2013 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.
 
 import("//build/config/ui.gni")
 
 component("base") {
   external = true
   sources = [
     "../build/build_config.h",
@@ skipping 162 matching lines @@
     "files/file_path_watcher_stub.cc",
     "files/file_path_watcher_win.cc",
     "files/file_util_proxy.cc",
     "files/file_util_proxy.h",
     "files/important_file_writer.cc",
     "files/important_file_writer.h",
     "files/memory_mapped_file.cc",
     "files/memory_mapped_file.h",
     "files/memory_mapped_file_posix.cc",
     "files/memory_mapped_file_win.cc",
+    "files/scoped_file.cc",
+    "files/scoped_file.h",
     "files/scoped_temp_dir.cc",
     "files/scoped_temp_dir.h",
     "float_util.h",
     "format_macros.h",
     "gtest_prod_util.h",
     "guid.cc",
     "guid.h",
     "guid_posix.cc",
     "guid_win.cc",
     "hash.cc",
@@ skipping 707 matching lines @@
   #    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   #    'msvs_disabled_warnings': [
   #      4267,
   #    ],
   #  }],
   #],
   #'variables': {
   #  'optimize': 'max',
   #},
 }