X.509-related cleanup

chrome/browser/dom_ui/slideshow_ui.cc

 // Copyright (c) 2010 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/dom_ui/slideshow_ui.h"
 
 #include "app/resource_bundle.h"
 #include "base/callback.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
+#include "base/singleton.h"
 #include "base/string_piece.h"
 #include "base/string_util.h"
 #include "base/thread.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "base/weak_ptr.h"
 #include "chrome/browser/browser_thread.h"
 #include "chrome/browser/dom_ui/dom_ui_favicon_source.h"
 #include "chrome/browser/history/history_types.h"
@@ skipping 263 matching lines @@
   SlideshowUIHTMLSource* html_source = new SlideshowUIHTMLSource();
 
   // Set up the chrome://slideshow/ source.
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
           Singleton<ChromeURLDataManager>::get(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(html_source)));
 }