Move Singleton and related structs to namespace base

chrome/browser/chromeos/policy/user_network_configuration_updater_factory.cc

 // Copyright 2013 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/chromeos/policy/user_network_configuration_updater_factory.h"
 
 #include "base/memory/singleton.h"
 #include "chrome/browser/chromeos/policy/user_network_configuration_updater.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/policy/profile_policy_connector.h"
@@ skipping 11 matching lines @@
 // static
 UserNetworkConfigurationUpdater*
 UserNetworkConfigurationUpdaterFactory::GetForProfile(Profile* profile) {
   return static_cast<UserNetworkConfigurationUpdater*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 // static
 UserNetworkConfigurationUpdaterFactory*
 UserNetworkConfigurationUpdaterFactory::GetInstance() {
-  return Singleton<UserNetworkConfigurationUpdaterFactory>::get();
+  return base::Singleton<UserNetworkConfigurationUpdaterFactory>::get();
 }
 
 UserNetworkConfigurationUpdaterFactory::UserNetworkConfigurationUpdaterFactory()
     : BrowserContextKeyedServiceFactory(
           "UserNetworkConfigurationUpdater",
           BrowserContextDependencyManager::GetInstance()) {
   DependsOn(ProfilePolicyConnectorFactory::GetInstance());
 }
 
 UserNetworkConfigurationUpdaterFactory::
@@ skipping 37 matching lines @@
   return UserNetworkConfigurationUpdater::CreateForUserPolicy(
       profile,
       allow_trusted_certs_from_policy,
       *user,
       profile_connector->policy_service(),
       chromeos::NetworkHandler::Get()->managed_network_configuration_handler())
       .release();
 }
 
 }  // namespace policy