Move file_util to base/files/ directory.

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")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 155 matching lines @@
     "debug/trace_event_system_stats_monitor.cc",
     "debug/trace_event_system_stats_monitor.h",
     "debug/trace_event_win.cc",
     "deferred_sequenced_task_runner.cc",
     "deferred_sequenced_task_runner.h",
     "environment.cc",
     "environment.h",
     "event_recorder.h",
     "event_recorder_win.cc",
     "file_descriptor_posix.h",
-    "file_util.cc",
-    "file_util.h",
-    "file_util_android.cc",
-    "file_util_linux.cc",
-    "file_util_mac.mm",
-    "file_util_posix.cc",
-    "file_util_win.cc",
     "file_version_info.h",
     "file_version_info_mac.h",
     "file_version_info_mac.mm",
     "file_version_info_win.cc",
     "file_version_info_win.h",
     "files/dir_reader_fallback.h",
     "files/dir_reader_linux.h",
     "files/dir_reader_posix.h",
     "files/file.cc",
     "files/file_posix.cc",
     "files/file_win.cc",
     "files/file_enumerator.cc",
     "files/file_enumerator.h",
     "files/file_enumerator_posix.cc",
     "files/file_enumerator_win.cc",
     "files/file_path.cc",
     "files/file_path.h",
     "files/file_path_constants.cc",
     "files/file_path_watcher.cc",
     "files/file_path_watcher.h",
     "files/file_path_watcher_fsevents.cc",
     "files/file_path_watcher_fsevents.h",
     "files/file_path_watcher_kqueue.cc",
     "files/file_path_watcher_kqueue.h",
     "files/file_path_watcher_linux.cc",
     "files/file_path_watcher_mac.cc",
     "files/file_path_watcher_win.cc",
     "files/file_proxy.cc",
     "files/file_proxy.h",
+    "files/file_util.cc",
+    "files/file_util.h",
+    "files/file_util_android.cc",
+    "files/file_util_linux.cc",
+    "files/file_util_mac.mm",
+    "files/file_util_posix.cc",
     "files/file_util_proxy.cc",
     "files/file_util_proxy.h",
+    "files/file_util_win.cc",
     "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",
@@ skipping 568 matching lines @@
       "debug/stack_trace_posix.cc",
     ]
   }
 
   if (is_nacl) {
     # These things would otherwise be built on a Posix build but aren't
     # supported on NaCl.
     sources -= [
       "debug/stack_trace_posix.cc",
       "files/file_enumerator_posix.cc",
-      "file_util_posix.cc",
+      "files/file_util_posix.cc",
       "message_loop/message_pump_libevent.cc",
       "process/kill_posix.cc",
       "process/launch_posix.cc",
       "process/process_metrics_posix.cc",
       "process/process_posix.cc",
       "metrics/field_trial.cc",
       "native_library_posix.cc",
       "memory/shared_memory_posix.cc",
       "sync_socket_posix.cc",
       "sys_info_posix.cc",
@@ skipping 264 matching lines @@
     "debug/stack_trace_unittest.cc",
     "debug/trace_event_argument_unittest.cc",
     "debug/trace_event_memory_unittest.cc",
     "debug/trace_event_synthetic_delay_unittest.cc",
     "debug/trace_event_system_stats_monitor_unittest.cc",
     "debug/trace_event_unittest.cc",
     "debug/trace_event_unittest.h",
     "debug/trace_event_win_unittest.cc",
     "deferred_sequenced_task_runner_unittest.cc",
     "environment_unittest.cc",
-    "file_util_unittest.cc",
     "file_version_info_unittest.cc",
     "files/dir_reader_posix_unittest.cc",
     "files/file_path_unittest.cc",
     "files/file_proxy_unittest.cc",
     "files/file_unittest.cc",
     "files/file_util_proxy_unittest.cc",
+    "files/file_util_unittest.cc",
     "files/important_file_writer_unittest.cc",
     "files/scoped_temp_dir_unittest.cc",
     "gmock_unittest.cc",
     "guid_unittest.cc",
     "hash_unittest.cc",
     "id_map_unittest.cc",
     "i18n/break_iterator_unittest.cc",
     "i18n/char_iterator_unittest.cc",
     "i18n/case_conversion_unittest.cc",
     "i18n/file_util_icu_unittest.cc",
@@ skipping 348 matching lines @@
 
   unittest_apk("base_unittests_apk") {
     deps = [
       ":base_java",
       ":base_java_unittest_support",
       ":base_unittests",
     ]
     unittests_dep = ":base_unittests"
   }
 }