Third patch in getting rid of caching MessageLoop pointers and always using C...

chrome/browser/printing/print_dialog_gtk.cc

 // Copyright (c) 2009 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 <gtk/gtkprintjob.h>
 #include <gtk/gtkprintunixdialog.h>
 #include <gtk/gtkpagesetupunixdialog.h>
 
 #include "base/file_util.h"
 #include "base/logging.h"
-#include "base/message_loop.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_window.h"
+#include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/tab_contents/infobar_delegate.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 
 namespace {
 
 // This is a temporary infobar designed to help gauge how many users are trying
 // to print to printers that don't support PDF.
 class PdfUnsupportedInfoBarDelegate : public LinkInfoBarDelegate {
  public:
   explicit PdfUnsupportedInfoBarDelegate(Browser* browser)
@@ skipping 25 matching lines @@
     return true;
   }
 
  private:
   Browser* browser_;
 };
 
 }  // namespace
 
 // static
-void PrintDialogGtk::CreatePrintDialogForPdf(const FilePath& path,
-                                                MessageLoop* loop) {
-  loop->PostTask(FROM_HERE,
+void PrintDialogGtk::CreatePrintDialogForPdf(const FilePath& path) {
+  ChromeThread::PostTask(
+      ChromeThread::UI, FROM_HERE,
       NewRunnableFunction(&PrintDialogGtk::CreateDialogImpl, path));
 }
 
 // static
 void PrintDialogGtk::CreateDialogImpl(const FilePath& path) {
   new PrintDialogGtk(path);
 }
 
 PrintDialogGtk::PrintDialogGtk(const FilePath& path_to_pdf)
     : path_to_pdf_(path_to_pdf),
@@ skipping 59 matching lines @@
   if (error)
     LOG(ERROR) << "Printing failed: " << error->message;
 
   if (job)
     g_object_unref(job);
 
   file_util::Delete(path_to_pdf_, false);
 
   delete this;
 }