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

chrome/browser/dom_ui/mediaplayer_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/mediaplayer_ui.h"
 
 #include "app/resource_bundle.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ skipping 194 matching lines @@
 }
 
 MediaplayerHandler::~MediaplayerHandler() {
 }
 
 DOMMessageHandler* MediaplayerHandler::Attach(DOMUI* dom_ui) {
   // Create our favicon data source.
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
-          Singleton<ChromeURLDataManager>::get(),
+          ChromeURLDataManager::GetInstance(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(new DOMUIFavIconSource(dom_ui->GetProfile()))));
 
   return DOMMessageHandler::Attach(dom_ui);
 }
 
 void MediaplayerHandler::Init(bool is_playlist, TabContents* contents) {
   MediaPlayer* player = MediaPlayer::Get();
   if (!is_playlist) {
     player->SetNewHandler(this, contents);
@@ skipping 377 matching lines @@
     handler->Init(false, contents);
   }
 
   MediaplayerUIHTMLSource* html_source =
       new MediaplayerUIHTMLSource(is_playlist);
 
   // Set up the chrome://mediaplayer/ source.
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
-          Singleton<ChromeURLDataManager>::get(),
+          ChromeURLDataManager::GetInstance(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(html_source)));
 }