Do not show the activity widget in ActivityManager::AddActivity

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 a2b4cb40d5f91aaaeab672082b8d68c87c7c5dd2..f24d1b5fb1d471bd2638910847d2ddeac614f61c 100644
--- a/athena/activity/activity_manager_unittest.cc
+++ b/athena/activity/activity_manager_unittest.cc
@@ -20,6 +20,11 @@ TEST_F(ActivityManagerTest, Basic) {
       NULL, base::string16(), GURL());
   EXPECT_EQ(1, activity_manager->num_activities());
 
+  // Activity is not visible when created.
+  EXPECT_FALSE(activity1->GetWindow()->TargetVisibility());
+  Activity::Show(activity1);
+  EXPECT_TRUE(activity1->GetWindow()->TargetVisibility());
+
   Activity* activity2 = athena::ActivityFactory::Get()->CreateWebActivity(
       NULL, base::string16(), GURL());
   EXPECT_EQ(2, activity_manager->num_activities());