Revert of Cleanup: Remove base/file_util.h. Convert remaining references.

third_party/leveldatabase/env_chromium.cc

 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file. See the AUTHORS file for names of contributors.
 
 #include "third_party/leveldatabase/env_chromium.h"
 
 #if defined(OS_WIN)
 #include <io.h>
 #endif
 
 #include "base/debug/trace_event.h"
-#include "base/files/file_util.h"
+#include "base/file_util.h"
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/leveldatabase/env_chromium_stdio.h"
 #include "third_party/re2/re2/re2.h"
 
 #if defined(OS_WIN)
 #include "base/command_line.h"
 #include "base/win/win_util.h"
 #include "third_party/leveldatabase/env_chromium_win.h"
@@ skipping 828 matching lines @@
 
 Env* IDBEnv() {
   return leveldb_env::idb_env.Pointer();
 }
 
 Env* Env::Default() {
   return leveldb_env::default_env.Pointer();
 }
 
 }  // namespace leveldb