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

chrome/browser/chromeos/dom_ui/menu_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/chromeos/dom_ui/menu_ui.h"
 
 #include "app/menus/menu_model.h"
 #include "app/resource_bundle.h"
 #include "base/callback.h"
 #include "base/command_line.h"
@@ skipping 517 matching lines @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
 MenuUI::MenuUI(TabContents* contents) : DOMUI(contents) {
   MenuHandler* handler = new MenuHandler();
   AddMessageHandler((handler)->Attach(this));
 
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
-          Singleton<ChromeURLDataManager>::get(),
+          ChromeURLDataManager::GetInstance(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(CreateDataSource())));
 }
 
 MenuUI::MenuUI(TabContents* contents, ChromeURLDataManager::DataSource* source)
     : DOMUI(contents) {
   MenuHandler* handler = new MenuHandler();
   AddMessageHandler((handler)->Attach(this));
 
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
-          Singleton<ChromeURLDataManager>::get(),
+          ChromeURLDataManager::GetInstance(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(source)));
 }
 
 void MenuUI::ModelUpdated(const menus::MenuModel* model) {
   DictionaryValue json_model;
   ListValue* items = new ListValue();
   json_model.Set("items", items);
   int max_icon_width = 0;
   bool has_accelerator = false;
@@ skipping 93 matching lines @@
 
 ChromeURLDataManager::DataSource* MenuUI::CreateDataSource() {
   return CreateMenuUIHTMLSource(NULL,
                                 chrome::kChromeUIMenu,
                                 "Menu" /* class name */,
                                 kNoExtraResource,
                                 kNoExtraResource);
 }
 
 }  // namespace chromeos