Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/extensions/api/messaging/native_message_process_host_unittest.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 "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/json/json_reader.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 129 matching lines @@
     return std::string(const_cast<const Pickle*>(&pickle)->payload(),
                        pickle.payload_size());
   }
 
   base::FilePath CreateTempFileWithMessage(const std::string& message) {
     base::FilePath filename;
     if (!base::CreateTemporaryFileInDir(temp_dir_.path(), &filename))
       return base::FilePath();
 
     std::string message_with_header = FormatMessage(message);
-    int bytes_written = file_util::WriteFile(
+    int bytes_written = base::WriteFile(
         filename, message_with_header.data(), message_with_header.size());
     if (bytes_written < 0 ||
         (message_with_header.size() != static_cast<size_t>(bytes_written))) {
       return base::FilePath();
     }
     return filename;
   }
 
   base::ScopedTempDir temp_dir_;
   // Force the channel to be dev.
@@ skipping 147 matching lines @@
       ScopedTestNativeMessagingHost::kHostName, 0, false);
   ASSERT_TRUE(native_message_process_host_.get());
   run_loop_.reset(new base::RunLoop());
   run_loop_->Run();
 
   // The host should fail to start.
   ASSERT_TRUE(channel_closed_);
 }
 
 }  // namespace extensions