Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/service/cloud_print/printer_job_handler.cc

Index: chrome/service/cloud_print/printer_job_handler.cc
diff --git a/chrome/service/cloud_print/printer_job_handler.cc b/chrome/service/cloud_print/printer_job_handler.cc
index bb13defc798556d77e8c64712ecfd1e3a60b6b91..f92ca1b38bf109e48af01006825cf7bbbabc8c84 100644
--- a/chrome/service/cloud_print/printer_job_handler.cc
+++ b/chrome/service/cloud_print/printer_job_handler.cc
@@ -387,8 +387,8 @@ PrinterJobHandler::HandlePrintDataResponse(const net::URLFetcher* source,
   if (base::CreateTemporaryFile(&job_details_.print_data_file_path_)) {
     UMA_HISTOGRAM_ENUMERATION("CloudPrint.JobHandlerEvent", JOB_HANDLER_DATA,
                               JOB_HANDLER_MAX);
-    int ret = file_util::WriteFile(job_details_.print_data_file_path_,
-                                   data.c_str(), data.length());
+    int ret = base::WriteFile(job_details_.print_data_file_path_,
+                              data.c_str(), data.length());
     source->GetResponseHeaders()->GetMimeType(
         &job_details_.print_data_mime_type_);
     DCHECK(ret == static_cast<int>(data.length()));