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

chrome/browser/sync/sync_setup_wizard.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/sync/sync_setup_wizard.h"
 
 #include "app/resource_bundle.h"
 #include "base/message_loop.h"
 #include "base/singleton.h"
 #include "chrome/browser/browser_thread.h"
@@ skipping 197 matching lines @@
 }
 
 SyncSetupWizard::SyncSetupWizard(ProfileSyncService* service)
     : service_(service),
       flow_container_(new SyncSetupFlowContainer()),
       parent_window_(NULL) {
   // Add our network layer data source for 'cloudy' URLs.
   SyncResourcesSource* sync_source = new SyncResourcesSource();
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
-      NewRunnableMethod(Singleton<ChromeURLDataManager>::get(),
+      NewRunnableMethod(ChromeURLDataManager::GetInstance(),
                         &ChromeURLDataManager::AddDataSource,
                         make_scoped_refptr(sync_source)));
 }
 
 SyncSetupWizard::~SyncSetupWizard() {
   delete flow_container_;
 }
 
 void SyncSetupWizard::Step(State advance_state) {
   SyncSetupFlow* flow = flow_container_->get_flow();
@@ skipping 52 matching lines @@
     result = GAIA_SUCCESS;
   } else if (start_state == ENTER_PASSPHRASE) {
     result = DONE;
   } else if (start_state == CONFIGURE) {
     result = DONE;
   }
   DCHECK_NE(FATAL_ERROR, result) <<
       "Invalid start state for discrete run: " << start_state;
   return result;
 }