Convert chrome_url_data_manager (previously a global) into a Singleton. This

chrome/browser/dom_ui/print_ui.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/dom_ui/print_ui.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/message_loop.h"
+#include "base/singleton.h"
 #include "base/thread.h"
 #include "base/values.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/common/jstemplate_builder.h"
 #include "chrome/common/url_constants.h"
 
 #include "grit/browser_resources.h"
 #include "grit/generated_resources.h"
 
 ///////////////////////////////////////////////////////////////////////////////
 //
 // PrintUI
 //
 ///////////////////////////////////////////////////////////////////////////////
 
 PrintUI::PrintUI(TabContents* contents) : DOMUI(contents) {
   PrintUIHTMLSource* html_source = new PrintUIHTMLSource();
 
   // Set up the print:url source.
   ChromeThread::PostTask(
       ChromeThread::IO, FROM_HERE,
       NewRunnableMethod(
-          &chrome_url_data_manager,
+          Singleton<ChromeURLDataManager>().get(),
           &ChromeURLDataManager::AddDataSource,
           html_source));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // PrintUIHTMLSource
 //
 ////////////////////////////////////////////////////////////////////////////////
 
@@ skipping 15 matching lines @@
           IDR_PRINT_TAB_HTML));
   const std::string full_html = jstemplate_builder::GetI18nTemplateHtml(
       print_html, &localized_strings);
 
   // Load the print html page into the tab contents.
   scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
   html_bytes->data.resize(full_html.size());
   std::copy(full_html.begin(), full_html.end(), html_bytes->data.begin());
   SendResponse(request_id, html_bytes);
 }