Remove DeleteTask and convert remaining users.

chrome/browser/ui/gtk/create_application_shortcuts_dialog_gtk.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_GTK_CREATE_APPLICATION_SHORTCUTS_DIALOG_GTK_H_
 #define CHROME_BROWSER_UI_GTK_CREATE_APPLICATION_SHORTCUTS_DIALOG_GTK_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
+#include "base/message_loop_helpers.h"
 #include "chrome/browser/extensions/image_loading_tracker.h"
 #include "chrome/browser/shell_integration.h"
 #include "content/public/browser/browser_thread.h"
 #include "googleurl/src/gurl.h"
 #include "ui/base/gtk/gtk_signal.h"
 
 using content::BrowserThread;
 
 typedef struct _GdkPixbuf GdkPixbuf;
 typedef struct _GtkWidget GtkWidget;
@@ skipping 43 matching lines @@
   GdkPixbuf* favicon_pixbuf_;
 
   // Dialog box that allows the user to create an application shortcut.
   GtkWidget* create_dialog_;
 
   // Dialog box that shows the error message.
   GtkWidget* error_dialog_;
 
  private:
   friend struct BrowserThread::DeleteOnThread<BrowserThread::UI>;
-  friend class DeleteTask<CreateApplicationShortcutsDialogGtk>;
+  friend class base::DeleteHelper<CreateApplicationShortcutsDialogGtk>;
   DISALLOW_COPY_AND_ASSIGN(CreateApplicationShortcutsDialogGtk);
 };
 
 class CreateWebApplicationShortcutsDialogGtk
     : public CreateApplicationShortcutsDialogGtk {
  public:
   // Displays the dialog box to create application shortcuts for |tab_contents|.
   static void Show(GtkWindow* parent, TabContentsWrapper* tab_contents);
 
   CreateWebApplicationShortcutsDialogGtk(GtkWindow* parent,
@@ skipping 28 matching lines @@
                              const ExtensionResource& resource,
                              int index) OVERRIDE;
 
  private:
   const Extension* app_;
   ImageLoadingTracker tracker_;
   DISALLOW_COPY_AND_ASSIGN(CreateChromeApplicationShortcutsDialogGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_CREATE_APPLICATION_SHORTCUTS_DIALOG_GTK_H_