Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/installer/util/self_cleaning_temp_dir_unittest.cc

 // Copyright (c) 2011 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 <windows.h>
 #include <wincrypt.h>
 
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 143 matching lines @@
 
   // Make up some path under the temp dir.
   base::FilePath parent_temp_dir(work_dir.path().Append(L"One").Append(L"Two"));
   {
     SelfCleaningTempDir temp_dir;
     EXPECT_TRUE(temp_dir.Initialize(parent_temp_dir, L"Three"));
     EXPECT_EQ(parent_temp_dir.Append(L"Three"), temp_dir.path());
     EXPECT_TRUE(base::DirectoryExists(temp_dir.path()));
     // Drop a file somewhere.
     EXPECT_EQ(arraysize(kHiHon) - 1,
-              file_util::WriteFile(parent_temp_dir.Append(GetRandomFilename()),
-                                   kHiHon, arraysize(kHiHon) - 1));
+              base::WriteFile(parent_temp_dir.Append(GetRandomFilename()),
+                              kHiHon, arraysize(kHiHon) - 1));
   }
   EXPECT_FALSE(base::DirectoryExists(parent_temp_dir.Append(L"Three")));
   EXPECT_TRUE(base::DirectoryExists(parent_temp_dir));
   EXPECT_TRUE(work_dir.Delete());
   EXPECT_FALSE(base::DirectoryExists(parent_temp_dir.DirName().DirName()));
 }
 
 }  // namespace installer