Remaining cleanup (base::Bind): Replacing FileUtilProxy calls with new callback

chrome/browser/printing/print_dialog_gtk.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 "chrome/browser/printing/print_dialog_gtk.h"
 
 #include <fcntl.h>
 #include <gtk/gtkpagesetupunixdialog.h>
 #include <gtk/gtkprintjob.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
 #include <string>
 #include <vector>
 
+#include "base/bind.h"
 #include "base/file_util.h"
-#include "base/file_util_proxy.h"
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "printing/metafile.h"
 #include "printing/print_job_constants.h"
 #include "printing/print_settings_initializer_gtk.h"
 
 using printing::PageRanges;
 using printing::PrintSettings;
@@ skipping 365 matching lines @@
                                          gpointer user_data,
                                          GError* error) {
   static_cast<PrintDialogGtk*>(user_data)->OnJobCompleted(print_job, error);
 }
 
 void PrintDialogGtk::OnJobCompleted(GtkPrintJob* print_job, GError* error) {
   if (error)
     LOG(ERROR) << "Printing failed: " << error->message;
   if (print_job)
     g_object_unref(print_job);
-  base::FileUtilProxy::Delete(
-      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE),
-      path_to_pdf_,
-      false,
-      NULL);
+  BrowserThread::PostTask(
+      BrowserThread::FILE,
+      FROM_HERE,
+      base::IgnoreReturn(base::Callback<bool(void)>(
+          base::Bind(&file_util::Delete, path_to_pdf_, false))));
   // Printing finished. Matches AddRef() in PrintDocument();
   Release();
 }
 
 void PrintDialogGtk::InitPrintSettings(const PageRanges& page_ranges) {
   PrintSettings settings;
   printing::PrintSettingsInitializerGtk::InitPrintSettings(
       gtk_settings_, page_setup_, page_ranges, false, &settings);
   context_->InitWithSettings(settings);
 }