Run athena on device

athena/main/athena_launcher.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/main/public/athena_launcher.h"
 
 #include "athena/activity/public/activity_factory.h"
 #include "athena/activity/public/activity_manager.h"
 #include "athena/content/public/app_registry.h"
 #include "athena/content/public/content_activity_factory_creator.h"
@@ skipping 26 matching lines @@
 #endif
 
 namespace athena {
 struct AthenaEnvState;
 }
 
 DECLARE_WINDOW_PROPERTY_TYPE(athena::AthenaEnvState*);
 
 namespace athena {
 
+namespace {
+
+bool session_started = false;
+
+}  // namespace
+
 class VirtualKeyboardObserver;
 
 // Athena's env state.
 struct AthenaEnvState {
   scoped_ptr< ::wm::VisibilityController> visibility_client;
   scoped_ptr<VirtualKeyboardObserver> virtual_keyboard_observer;
 };
 
 DEFINE_OWNED_WINDOW_PROPERTY_KEY(athena::AthenaEnvState,
                                  kAthenaEnvStateKey,
@@ skipping 67 matching lines @@
   AthenaEnvState* env_state =
       athena::ScreenManager::Get()->GetContext()->GetProperty(
           kAthenaEnvStateKey);
 
   env_state->virtual_keyboard_observer.reset(new VirtualKeyboardObserver);
   CreateTestPages(context);
 }
 
 void StartAthenaSession(athena::ActivityFactory* activity_factory,
                         athena::AppModelBuilder* app_model_builder) {
+  DCHECK(!session_started);
+  session_started = true;
   athena::HomeCard::Create(app_model_builder);
   athena::ActivityManager::Create();
   athena::ResourceManager::Create();
   athena::ActivityFactory::RegisterActivityFactory(activity_factory);
 }
 
 void ShutdownAthena() {
-  athena::ActivityFactory::Shutdown();
-  athena::ResourceManager::Shutdown();
-  athena::ActivityManager::Shutdown();
-  athena::HomeCard::Shutdown();
+  if (session_started) {
+    athena::ActivityFactory::Shutdown();
+    athena::ResourceManager::Shutdown();
+    athena::ActivityManager::Shutdown();
+    athena::HomeCard::Shutdown();
+    session_started = false;
+  }
   athena::AppRegistry::ShutDown();
   athena::WindowManager::Shutdown();
   athena::SystemUI::Shutdown();
   athena::ScreenManager::Shutdown();
   athena::InputManager::Shutdown();
   athena::ExtensionsDelegate::Shutdown();
   athena::AthenaEnv::Shutdown();
 
   delete views::ViewsDelegate::views_delegate;
 }
 
 }  // namespace athena