iOS factories for SigninManager and GaiaCookieManagerService

ios/chrome/browser/signin/signin_manager_factory.h

+// 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.
+
+#ifndef IOS_CHROME_BROWSER_SIGNIN_SIGNIN_MANAGER_FACTORY_H_
+#define IOS_CHROME_BROWSER_SIGNIN_SIGNIN_MANAGER_FACTORY_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/observer_list.h"
+#include "components/keyed_service/ios/browser_state_keyed_service_factory.h"
+
+template <typename T>
+struct DefaultSingletonTraits;
+
+class SigninManagerFactoryObserver;
+class SigninManager;
+class PrefRegistrySimple;
+
+namespace ios {
+
+class ChromeBrowserState;
+
+// Singleton that owns all SigninManagers and associates them with browser
+// states.
+class SigninManagerFactory : public BrowserStateKeyedServiceFactory {
+ public:
+  static SigninManager* GetForBrowserState(
+      ios::ChromeBrowserState* browser_state);
+  static SigninManager* GetForBrowserStateIfExists(
+      ios::ChromeBrowserState* browser_state);
+
+  // Returns an instance of the SigninManagerFactory singleton.
+  static SigninManagerFactory* GetInstance();
+
+  // Implementation of BrowserStateKeyedServiceFactory (public so tests
+  // can call it).
+  void RegisterBrowserStatePrefs(
+      user_prefs::PrefRegistrySyncable* registry) override;
+
+  // Registers the browser-global prefs used by SigninManager.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
+
+  // Methods to register or remove observers of SigninManager creation/shutdown.
+  void AddObserver(SigninManagerFactoryObserver* observer);
+  void RemoveObserver(SigninManagerFactoryObserver* observer);
+
+  // Notifies observers of |manager|'s creation. Should be called only by test
+  // SigninManager subclasses whose construction does not occur in
+  // |BuildServiceInstanceFor()|.
+  void NotifyObserversOfSigninManagerCreationForTesting(SigninManager* manager);
+
+ private:
+  friend struct DefaultSingletonTraits<SigninManagerFactory>;
+
+  SigninManagerFactory();
+  ~SigninManagerFactory() override;
+
+  // List of observers. Checks that list is empty on destruction.
+  mutable base::ObserverList<SigninManagerFactoryObserver, true> observer_list_;
+
+  // BrowserStateKeyedServiceFactory:
+  scoped_ptr<KeyedService> BuildServiceInstanceFor(
+      web::BrowserState* context) const override;
+  void BrowserStateShutdown(web::BrowserState* context) override;
+};
+}
+
+#endif  // IOS_CHROME_BROWSER_SIGNIN_SIGNIN_MANAGER_FACTORY_H_