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

chrome/browser/dom_ui/shared_resources_data_source.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/shared_resources_data_source.h"
 
 #include <string>
 
 #include "app/resource_bundle.h"
 #include "base/singleton.h"
@@ skipping 39 matching lines @@
 }
 
 }  // namespace
 
 // static
 void SharedResourcesDataSource::Register() {
   SharedResourcesDataSource* source = new SharedResourcesDataSource();
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
-          Singleton<ChromeURLDataManager>::get(),
+          ChromeURLDataManager::GetInstance(),
           &ChromeURLDataManager::AddDataSource,
           make_scoped_refptr(source)));
 }
 
 SharedResourcesDataSource::SharedResourcesDataSource()
     : DataSource(chrome::kChromeUIResourcesHost, NULL) {
 }
 
 SharedResourcesDataSource::~SharedResourcesDataSource() {
 }
@@ skipping 12 matching lines @@
     const std::string& path) const {
   // Requests should not block on the disk!  On Windows this goes to the
   // registry.
   //   http://code.google.com/p/chromium/issues/detail?id=59849
   base::ThreadRestrictions::ScopedAllowIO allow_io;
 
   std::string mime_type;
   net::GetMimeTypeFromFile(FilePath().AppendASCII(path), &mime_type);
   return mime_type;
 }