Do not show the activity widget in ActivityManager::AddActivity

athena/extensions/athena_app_window_client_base.cc

 // Copyright 2014 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.
 
 #include "athena/extensions/athena_app_window_client_base.h"
 
 #include "athena/activity/public/activity_factory.h"
 #include "athena/activity/public/activity_manager.h"
 #include "athena/extensions/athena_native_app_window_views.h"
 #include "extensions/common/extension.h"
 
 namespace athena {
 
 AthenaAppWindowClientBase::AthenaAppWindowClientBase() {
 }
 
 AthenaAppWindowClientBase::~AthenaAppWindowClientBase() {
 }
 
 extensions::NativeAppWindow* AthenaAppWindowClientBase::CreateNativeAppWindow(
     extensions::AppWindow* app_window,
     const extensions::AppWindow::CreateParams& params) {
   AthenaNativeAppWindowViews* native_window = new AthenaNativeAppWindowViews;
   native_window->Init(app_window, params);
-  Activity* app_activity = ActivityFactory::Get()->CreateAppActivity(
-      app_window, native_window->GetWebView());
-  ActivityManager::Get()->AddActivity(app_activity);
+  ActivityFactory::Get()->CreateAppActivity(app_window,
+                                            native_window->GetWebView());
   return native_window;
 }
 
 void AthenaAppWindowClientBase::IncrementKeepAliveCount() {
   // No need to keep track of KeepAlive count on ChromeOS.
 }
 
 void AthenaAppWindowClientBase::DecrementKeepAliveCount() {
   // No need to keep track of KeepAlive count on ChromeOS.
 }
 
 }  // namespace athena