[cros login] Split login related classes into subfolders.

chrome/browser/chromeos/login/auth_sync_observer_factory.h

-// 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.
-
-#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_SYNC_OBSERVER_FACTORY_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_SYNC_OBSERVER_FACTORY_H_
-
-#include "base/memory/singleton.h"
-#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
-
-class Profile;
-
-namespace chromeos {
-
-class AuthSyncObserver;
-
-// Singleton that owns all AuthSyncObserver and associates them with
-// Profiles. Listens for the Profile's destruction notification and cleans up
-// the associated AuthSyncObserver.
-class AuthSyncObserverFactory
-    : public BrowserContextKeyedServiceFactory {
- public:
-  // Returns the instance of AuthSyncObserver associated with this
-  // |profile| (creates one if none exists).
-  static AuthSyncObserver* GetForProfile(Profile* profile);
-
-  // Returns an instance of the AuthSyncObserverFactory singleton.
-  static AuthSyncObserverFactory* GetInstance();
-
- private:
-  friend struct DefaultSingletonTraits<AuthSyncObserverFactory>;
-
-  AuthSyncObserverFactory();
-  virtual ~AuthSyncObserverFactory();
-
-  // BrowserContextKeyedServiceFactory implementation.
-  virtual KeyedService* BuildServiceInstanceFor(
-      content::BrowserContext* context) const OVERRIDE;
-
-  DISALLOW_COPY_AND_ASSIGN(AuthSyncObserverFactory);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_SYNC_OBSERVER_FACTORY_H_