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

chrome/browser/dom_ui/options/options_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/options/options_ui.h"
 
 #include <algorithm>
 
 #include "app/resource_bundle.h"
 #include "base/callback.h"
@@ skipping 174 matching lines @@
 #endif
 
   // |localized_strings| ownership is taken over by this constructor.
   OptionsUIHTMLSource* html_source =
       new OptionsUIHTMLSource(localized_strings);
 
   // Set up the chrome://settings/ source.
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
-          Singleton<ChromeURLDataManager>::get(),
+          ChromeURLDataManager::GetInstance(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(html_source)));
 
   // Set up chrome://theme/ source.
   DOMUIThemeSource* theme = new DOMUIThemeSource(GetProfile());
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
-          Singleton<ChromeURLDataManager>::get(),
+          ChromeURLDataManager::GetInstance(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(theme)));
 }
 
 OptionsUI::~OptionsUI() {
   // Uninitialize all registered handlers. The base class owns them and it will
   // eventually delete them.
   for (std::vector<DOMMessageHandler*>::iterator iter = handlers_.begin();
        iter != handlers_.end();
        ++iter) {
@@ skipping 47 matching lines @@
                                         OptionsPageUIHandler* handler_raw) {
   scoped_ptr<OptionsPageUIHandler> handler(handler_raw);
   DCHECK(handler.get());
   // Add only if handler's service is enabled.
   if (handler->IsEnabled()) {
     handler->GetLocalizedValues(localized_strings);
     // Add handler to the list and also pass the ownership.
     AddMessageHandler(handler.release()->Attach(this));
   }
 }