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

chrome/browser/printing/print_dialog_gtk.cc

Index: chrome/browser/printing/print_dialog_gtk.cc
diff --git a/chrome/browser/printing/print_dialog_gtk.cc b/chrome/browser/printing/print_dialog_gtk.cc
index 557fbb4a01765f196e5b433dacfb18d0576bfb0d..7577c076fdbf49329fccc8c0bcc88453d665b2b7 100644
--- a/chrome/browser/printing/print_dialog_gtk.cc
+++ b/chrome/browser/printing/print_dialog_gtk.cc
@@ -13,8 +13,8 @@
 #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"
@@ -400,11 +400,11 @@ void PrintDialogGtk::OnJobCompleted(GtkPrintJob* print_job, GError* 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();
 }