Remove all remaining traces of MessageLoopProxy.

chrome/browser/ui/libgtk2ui/print_dialog_gtk2.cc

Index: chrome/browser/ui/libgtk2ui/print_dialog_gtk2.cc
diff --git a/chrome/browser/ui/libgtk2ui/print_dialog_gtk2.cc b/chrome/browser/ui/libgtk2ui/print_dialog_gtk2.cc
index 3566414f836dbe4fe1227c6ba3ea4ce0bc86ac23..59157a41793d9fad72ebdc88fee7a6c23ef05bda 100644
--- a/chrome/browser/ui/libgtk2ui/print_dialog_gtk2.cc
+++ b/chrome/browser/ui/libgtk2ui/print_dialog_gtk2.cc
@@ -535,10 +535,8 @@ void PrintDialogGtk2::OnJobCompleted(GtkPrintJob* print_job,
   if (print_job)
     g_object_unref(print_job);
   base::FileUtilProxy::DeleteFile(
-      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE).get(),
-      path_to_pdf_,
-      false,
-      base::FileUtilProxy::StatusCallback());
+      BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE).get(),
+      path_to_pdf_, false, base::FileUtilProxy::StatusCallback());
   // Printing finished. Matches AddRef() in PrintDocument();
   Release();
 }