Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/nacl_host/test/mock_nacl_gdb.cc

 // Copyright (c) 2012 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 <cstdio>
 #include <cstring>
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/file_util.h"
@@ skipping 32 matching lines @@
   while (i < argc) {
     if (strcmp(argv[i], kEvalCommand) == 0) {
       i += 2;
       continue;
     }
     if (strcmp(argv[i], kCommand) == 0) {
       // Command line shouldn't end with --command switch without value.
       i += 2;
       CHECK_LE(i, argc);
       std::string nacl_gdb_script(argv[i - 1]);
-      file_util::WriteFile(base::FilePath::FromUTF8Unsafe(nacl_gdb_script),
-                           kPass, strlen(kPass));
+      base::WriteFile(base::FilePath::FromUTF8Unsafe(nacl_gdb_script),
+                      kPass, strlen(kPass));
       continue;
     }
     // Unknown argument.
     NOTREACHED() << "Invalid argument " << argv[i];
   }
   CHECK_EQ(i, argc);
-  file_util::WriteFile(base::FilePath::FromUTF8Unsafe(mock_nacl_gdb_file),
-                       kPass, strlen(kPass));
+  base::WriteFile(base::FilePath::FromUTF8Unsafe(mock_nacl_gdb_file),
+                  kPass, strlen(kPass));
   return 0;
 }