Remove DeleteTask and convert remaining users.

chrome/browser/themes/browser_theme_pack.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_THEMES_BROWSER_THEME_PACK_H_
 #define CHROME_BROWSER_THEMES_BROWSER_THEME_PACK_H_
 #pragma once
 
 #include <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/message_loop_helpers.h"
 #include "chrome/common/extensions/extension.h"
 #include "content/public/browser/browser_thread.h"
 #include "ui/gfx/color_utils.h"
 
 class FilePath;
 class RefCountedMemory;
 namespace ui {
 class DataPack;
 }
 namespace gfx {
@@ skipping 61 matching lines @@
   // Returns the raw PNG encoded data for IDR_THEME_NTP_*. This method is only
   // supposed to work for the NTP attribution and background resources.
   RefCountedMemory* GetRawData(int id) const;
 
   // Whether this theme provides an image for |id|.
   bool HasCustomImage(int id) const;
 
  private:
   friend struct content::BrowserThread::DeleteOnThread<
       content::BrowserThread::FILE>;
-  friend class DeleteTask<BrowserThemePack>;
+  friend class base::DeleteHelper<BrowserThemePack>;
   friend class BrowserThemePackTest;
 
   // Cached images. We cache all retrieved and generated bitmaps and keep
   // track of the pointers. We own these and will delete them when we're done
   // using them.
   typedef std::map<int, const gfx::Image*> ImageCache;
 
   // The raw PNG memory associated with a certain id.
   typedef std::map<int, scoped_refptr<RefCountedMemory> > RawImages;
 
@@ skipping 127 matching lines @@
   // in |image_memory_| that are in |prepared_images_| or vice versa.
   ImageCache prepared_images_;
 
   // Loaded images. These are loaded from |image_memory_| or the |data_pack_|.
   mutable ImageCache loaded_images_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserThemePack);
 };
 
 #endif  // CHROME_BROWSER_THEMES_BROWSER_THEME_PACK_H_