Make use of InvalidationService

chrome/browser/invalidation/invalidation_service_factory.h

 // Copyright (c) 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_INVALIDATION_INVALIDATION_SERVICE_FACTORY_H_
 #define CHROME_BROWSER_INVALIDATION_INVALIDATION_SERVICE_FACTORY_H_
 
 #include "base/basictypes.h"
 #include "base/memory/singleton.h"
 #include "components/browser_context_keyed_service/browser_context_keyed_service_factory.h"
 
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
 namespace syncer {
 class Invalidator;
 }
 
-class InvalidationFrontend;
 class Profile;
 
 namespace invalidation {
 
+class InvalidationService;
+class P2PInvalidationService;
+class FakeInvalidationService;
+
 // A BrowserContextKeyedServiceFactory to construct InvalidationServices.  The
 // implementation of the InvalidationService may be completely different on
 // different platforms; this class should help to hide this complexity.  It also
 // exposes some factory methods that are useful for setting up tests that rely
 // on invalidations.
 class InvalidationServiceFactory : public BrowserContextKeyedServiceFactory {
  public:
-  // TODO(rlarocque): Re-enable this once InvalidationFrontend can extend
-  // BrowserContextKeyedService.
-  // static InvalidationFrontend* GetForProfile(Profile* profile);
+  static InvalidationService* GetForProfile(Profile* profile);
 
   static InvalidationServiceFactory* GetInstance();
 
-  static BrowserContextKeyedService* BuildP2PInvalidationServiceFor(
-      Profile* profile);
-  static BrowserContextKeyedService* BuildTestServiceInstanceFor(
-      Profile* profile);
+  // A helper function to set this factory to return FakeInvalidationServices
+  // instead of the default InvalidationService objects.
+  void SetBuildOnlyFakeInvalidatorsForTest(bool test_mode_enabled);
+
+  // These helper functions to set the factory to build a test-only type of
+  // invalidator and return the instance immeidately.
+  P2PInvalidationService* BuildAndUseP2PInvalidationServiceForTest(
+      content::BrowserContext* context);
 
  private:
   friend struct DefaultSingletonTraits<InvalidationServiceFactory>;
 
   InvalidationServiceFactory();
   virtual ~InvalidationServiceFactory();
 
   // BrowserContextKeyedServiceFactory:
   virtual BrowserContextKeyedService* BuildServiceInstanceFor(
-      content::BrowserContext* profile) const OVERRIDE;
-  // TODO(rlarocque): Use this class, not InvalidatorStorage, to register
-  // for user prefs.
-  // virtual void RegisterUserPrefs(PrefRegistrySyncable* registry) OVERRIDE;
+      content::BrowserContext* context) const OVERRIDE;
+  virtual void RegisterUserPrefs(
+      user_prefs::PrefRegistrySyncable* registry) OVERRIDE;
+
+  // If true, this factory will return only FakeInvalidationService instances.
+  bool build_fake_invalidators_;
 
   DISALLOW_COPY_AND_ASSIGN(InvalidationServiceFactory);
 };
 
 }  // namespace invalidation
 
 #endif  // CHROME_BROWSER_INVALIDATION_INVALIDATION_SERVICE_FACTORY_H_