Create top level apps component and move some apps code there.

apps/app_restore_service_browsertest.cc

+// Copyright (c) 2012 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 "apps/app_restore_service.h"
+#include "apps/app_restore_service_factory.h"
+#include "chrome/browser/extensions/extension_prefs.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/extensions/extension_test_message_listener.h"
+#include "chrome/browser/extensions/platform_app_browsertest_util.h"
+#include "chrome/common/extensions/extension.h"
+#include "content/public/test/test_utils.h"
+
+using extensions::Extension;
+using extensions::ExtensionPrefs;
+using extensions::ExtensionSystem;
+// TODO(benwells): Move PlatformAppBrowserTest to apps namespace in apps
+// component.
+using extensions::PlatformAppBrowserTest;
+
+namespace apps {
+
+// Tests that a running app is recorded in the preferences as such.
+IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, RunningAppsAreRecorded) {
+  content::WindowedNotificationObserver extension_suspended(
+      chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED,
+      content::NotificationService::AllSources());
+
+  const Extension* extension = LoadExtension(
+      test_data_dir_.AppendASCII("platform_apps/restart_test"));
+  ASSERT_TRUE(extension);
+  ExtensionService* extension_service =
+      ExtensionSystem::Get(browser()->profile())->extension_service();
+  ExtensionPrefs* extension_prefs = extension_service->extension_prefs();
+
+  // App is running.
+  ASSERT_TRUE(extension_prefs->IsExtensionRunning(extension->id()));
+
+  // Wait for the extension to get suspended.
+  extension_suspended.Wait();
+
+  // App isn't running because it got suspended.
+  ASSERT_FALSE(extension_prefs->IsExtensionRunning(extension->id()));
+
+  // Pretend that the app is supposed to be running.
+  extension_prefs->SetExtensionRunning(extension->id(), true);
+
+  ExtensionTestMessageListener restart_listener("onRestarted", false);
+  apps::AppRestoreServiceFactory::GetForProfile(browser()->profile())->
+      HandleStartup(true);
+  restart_listener.WaitUntilSatisfied();
+}
+
+}  // apps