Move Singleton and related structs to namespace base

chrome/browser/ui/bookmarks/enhanced_bookmark_key_service_factory.cc

 // Copyright 2015 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/ui/bookmarks/enhanced_bookmark_key_service_factory.h"
 
 #include "base/memory/singleton.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/ui/bookmarks/enhanced_bookmark_key_service.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 
 // static
 EnhancedBookmarkKeyServiceFactory*
     EnhancedBookmarkKeyServiceFactory::GetInstance() {
-  return Singleton<EnhancedBookmarkKeyServiceFactory>::get();
+  return base::Singleton<EnhancedBookmarkKeyServiceFactory>::get();
 }
 
 EnhancedBookmarkKeyServiceFactory::EnhancedBookmarkKeyServiceFactory()
     : BrowserContextKeyedServiceFactory(
         "EnhancedBookmarkKeyService",
         BrowserContextDependencyManager::GetInstance()) {
 }
 
 EnhancedBookmarkKeyServiceFactory::~EnhancedBookmarkKeyServiceFactory() {
 }
@@ skipping 10 matching lines @@
 }
 
 bool EnhancedBookmarkKeyServiceFactory::ServiceIsCreatedWithBrowserContext()
     const {
   return true;
 }
 
 bool EnhancedBookmarkKeyServiceFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }