Move Singleton and related structs to namespace base

chrome/browser/chromeos/login/saml/saml_offline_signin_limiter_factory.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SAML_SAML_OFFLINE_SIGNIN_LIMITER_FACTORY_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SAML_SAML_OFFLINE_SIGNIN_LIMITER_FACTORY_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/singleton.h"
@@ skipping 16 matching lines @@
  public:
   static SAMLOfflineSigninLimiterFactory* GetInstance();
 
   static SAMLOfflineSigninLimiter* GetForProfile(Profile* profile);
 
   // |clock| will be passed to all SAMLOfflineSigninLimiters. Ensure that their
   // Shutdown() methods have been called before destroying |clock|.
   static void SetClockForTesting(base::Clock* clock);
 
  private:
-  friend struct DefaultSingletonTraits<SAMLOfflineSigninLimiterFactory>;
+  friend struct base::DefaultSingletonTraits<SAMLOfflineSigninLimiterFactory>;
 
   SAMLOfflineSigninLimiterFactory();
   ~SAMLOfflineSigninLimiterFactory() override;
 
   // BrowserContextKeyedServiceFactory:
   KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) const override;
 
   static base::Clock* clock_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(SAMLOfflineSigninLimiterFactory);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SAML_SAML_OFFLINE_SIGNIN_LIMITER_FACTORY_H_