Move WriteFile and WriteFileDescriptor from file_util to base namespace.

content/public/test/async_file_test_helper.cc

 // Copyright 2014 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/scoped_temp_dir.h"
 #include "base/run_loop.h"
 #include "content/public/test/async_file_test_helper.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 163 matching lines @@
 
 base::File::Error AsyncFileTestHelper::CreateFileWithData(
     fileapi::FileSystemContext* context,
     const fileapi::FileSystemURL& url,
     const char* buf,
     int buf_size) {
   base::ScopedTempDir dir;
   if (!dir.CreateUniqueTempDir())
     return base::File::FILE_ERROR_FAILED;
   base::FilePath local_path = dir.path().AppendASCII("tmp");
-  if (buf_size != file_util::WriteFile(local_path, buf, buf_size))
+  if (buf_size != base::WriteFile(local_path, buf, buf_size))
     return base::File::FILE_ERROR_FAILED;
   base::File::Error result = base::File::FILE_ERROR_FAILED;
   base::RunLoop run_loop;
   context->operation_runner()->CopyInForeignFile(
       local_path, url, AssignAndQuitCallback(&run_loop, &result));
   run_loop.Run();
   return result;
 }
 
 base::File::Error AsyncFileTestHelper::TruncateFile(
@@ skipping 62 matching lines @@
   quota::QuotaStatusCode status = quota::kQuotaStatusUnknown;
   quota_manager->GetUsageAndQuota(
       origin,
       FileSystemTypeToQuotaStorageType(type),
       base::Bind(&DidGetUsageAndQuota, &status, usage, quota));
   base::RunLoop().RunUntilIdle();
   return status;
 }
 
 }  // namespace fileapi