Add a new GetInstance() method for singleton classes used in chrome/browser files.

chrome/browser/dom_ui/downloads_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/downloads_ui.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/singleton.h"
 #include "base/string_piece.h"
@@ skipping 118 matching lines @@
   DownloadsDOMHandler* handler = new DownloadsDOMHandler(dlm);
   AddMessageHandler(handler);
   handler->Attach(this);
   handler->Init();
 
   DownloadsUIHTMLSource* html_source = new DownloadsUIHTMLSource();
 
   // Set up the chrome://downloads/ source.
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
-      NewRunnableMethod(Singleton<ChromeURLDataManager>::get(),
-          &ChromeURLDataManager::AddDataSource,
-          make_scoped_refptr(html_source)));
+      NewRunnableMethod(ChromeURLDataManager::GetInstance(),
+                        &ChromeURLDataManager::AddDataSource,
+                        make_scoped_refptr(html_source)));
 }
 
 // static
 RefCountedMemory* DownloadsUI::GetFaviconResourceBytes() {
   return ResourceBundle::GetSharedInstance().
       LoadDataResourceBytes(IDR_DOWNLOADS_FAVICON);
 }