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

third_party/leveldatabase/env_chromium_unittest.cc

 // 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.
 
+#include "base/file_util.h"
 #include "base/files/file.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
-#include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/test/test_suite.h"
 #include "third_party/leveldatabase/env_chromium_stdio.h"
 #if defined(OS_WIN)
 #include "third_party/leveldatabase/env_chromium_win.h"
 #endif
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/leveldatabase/env_idb.h"
 #include "third_party/leveldatabase/src/include/leveldb/db.h"
 
@@ skipping 244 matching lines @@
   EXPECT_TRUE(status.ok());
   EXPECT_EQ(1U, result.size());
 
   // And a second time should also return one result
   status = env->GetChildren(dir.AsUTF8Unsafe(), &result);
   EXPECT_TRUE(status.ok());
   EXPECT_EQ(1U, result.size());
 }
 
 int main(int argc, char** argv) { return base::TestSuite(argc, argv).Run(); }