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

chrome/browser/browser_signin.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/browser_signin.h"
 
 #include <string>
 #include <vector>
 
 #include "app/resource_bundle.h"
@@ skipping 200 matching lines @@
       username, password, captcha, access_code);
 }
 
 BrowserSignin::BrowserSignin(Profile* profile)
     : profile_(profile),
       delegate_(NULL),
       html_dialog_ui_delegate_(NULL) {
   BrowserSigninResourcesSource* source = new BrowserSigninResourcesSource();
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
-      NewRunnableMethod(Singleton<ChromeURLDataManager>::get(),
+      NewRunnableMethod(ChromeURLDataManager::GetInstance(),
                         &ChromeURLDataManager::AddDataSource,
                         make_scoped_refptr(source)));
 }
 
 BrowserSignin::~BrowserSignin() {
   delegate_ = NULL;
 }
 
 void BrowserSignin::RequestSignin(TabContents* tab_contents,
                                   const string16& suggested_email,
@@ skipping 91 matching lines @@
 
 void BrowserSignin::ShowSigninTabModal(TabContents* tab_contents) {
 //  TODO(johnnyg): Need a linux views implementation for ConstrainedHtmlDialog.
 #if defined(OS_WIN) || defined(OS_CHROMEOS) || !defined(TOOLKIT_VIEWS)
   html_dialog_ui_delegate_ = CreateHtmlDialogUI();
   ConstrainedHtmlUI::CreateConstrainedHtmlDialog(profile_,
                                                  html_dialog_ui_delegate_,
                                                  tab_contents);
 #endif
 }