Add actiivity in factory

athena/activity/activity_manager_unittest.cc

Index: athena/activity/activity_manager_unittest.cc
diff --git a/athena/activity/activity_manager_unittest.cc b/athena/activity/activity_manager_unittest.cc
index 8ba17876b17f4d986fb398980c21dff884ccbaeb..a2b4cb40d5f91aaaeab672082b8d68c87c7c5dd2 100644
--- a/athena/activity/activity_manager_unittest.cc
+++ b/athena/activity/activity_manager_unittest.cc
@@ -18,12 +18,10 @@ TEST_F(ActivityManagerTest, Basic) {
       static_cast<ActivityManagerImpl*>(ActivityManager::Get());
   Activity* activity1 = athena::ActivityFactory::Get()->CreateWebActivity(
       NULL, base::string16(), GURL());
-  activity_manager->AddActivity(activity1);
   EXPECT_EQ(1, activity_manager->num_activities());
 
   Activity* activity2 = athena::ActivityFactory::Get()->CreateWebActivity(
       NULL, base::string16(), GURL());
-  activity_manager->AddActivity(activity2);
   EXPECT_EQ(2, activity_manager->num_activities());
 
   Activity::Delete(activity1);