Refactor kiosk app launch to be part of login screen UI flow.

chrome/browser/chromeos/app_mode/app_launch_utils.cc

+// Copyright 2013 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 "chrome/browser/chromeos/app_mode/app_launch_utils.h"
+
+#include "chrome/browser/chromeos/app_mode/kiosk_app_launch_error.h"
+#include "chrome/browser/chromeos/app_mode/startup_app_launcher.h"
+#include "chrome/browser/lifetime/application_lifetime.h"
+
+namespace chromeos {
+
+// A simple manager for the app launch that starts the launch
+// and deletes itself when the launch finishes. On launch failure,
+// it exits the browser process.
+class AppLaunchManager : public StartupAppLauncher::Observer {
+ public:
+  AppLaunchManager(Profile* profile, const std::string& app_id) {
+    startup_app_launcher_.reset(new StartupAppLauncher(profile, app_id));
+  }
+
+  void Start() {
+    startup_app_launcher_->AddObserver(this);
+    startup_app_launcher_->Start();
+  }
+
+ private:
+  virtual ~AppLaunchManager() {}
+
+  void Cleanup() { delete this; }
+
+  virtual void OnLoadingOAuthFile() OVERRIDE {}
+  virtual void OnInitializingTokenService() OVERRIDE {}
+  virtual void OnInitializingNetwork() OVERRIDE {}
+  virtual void OnNetworkWaitTimedout() OVERRIDE {}
+  virtual void OnInstallingApp() OVERRIDE {}
+  virtual void OnLaunchSucceeded() OVERRIDE { Cleanup(); }
+  virtual void OnLaunchFailed(KioskAppLaunchError::Error error) OVERRIDE {
+    KioskAppLaunchError::Save(error);
+    chrome::AttemptUserExit();
+    Cleanup();
+  }
+
+  scoped_ptr<StartupAppLauncher> startup_app_launcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(AppLaunchManager);
+};
+
+void LaunchAppOrDie(Profile* profile, const std::string& app_id) {
+  // AppLaunchManager manages its own lifetime.
+  (new AppLaunchManager(profile, app_id))->Start();
+}
+
+}  // namespace chromeos