Re-implement the screensaver to use WebView instead of ExtensionDialogHost.

chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.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 "chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.h"
 
+#include "ash/screensaver/screensaver_view.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "chrome/browser/chromeos/kiosk_mode/kiosk_mode_settings.h"
 #include "chrome/browser/chromeos/login/existing_user_controller.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
-#include "chrome/browser/chromeos/ui/screensaver_extension_dialog.h"
+#include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/sandboxed_extension_unpacker.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_file_util.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 
 namespace chromeos {
 
@@ skipping 141 matching lines @@
   // We will register ourselves now and unregister if a user logs in.
   chromeos::PowerManagerClient* power_manager =
       chromeos::DBusThreadManager::Get()->GetPowerManagerClient();
   if (!power_manager->HasObserver(this))
     power_manager->AddObserver(this);
 
   // We need to disappear and login the demo user if we go active.
   chromeos::DBusThreadManager::Get()->
       GetPowerManagerClient()->RequestActiveNotification();
 
-  browser::ShowScreensaverDialog(extension);
+  // Add the extension to the extension service and display the screensaver.
+  Profile* default_profile = ProfileManager::GetDefaultProfile();
+  if (!default_profile->GetExtensionService()->AddExtension(extension)) {
+    LOG(ERROR) << "Couldn't add screensaver extension to profile.";
+    return;
+  }
+
+  ash::ShowScreensaver(extension->GetFullLaunchURL());
 }
 
 // NotificationObserver overrides:
 void KioskModeScreensaver::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK_EQ(type, chrome::NOTIFICATION_SESSION_STARTED);
   // User logged in, remove our observers, screensaver will be deactivated.
   chromeos::PowerManagerClient* power_manager =
       chromeos::DBusThreadManager::Get()->GetPowerManagerClient();
   if (power_manager->HasObserver(this))
     power_manager->RemoveObserver(this);
 
-  browser::CloseScreensaverDialog();
+  ash::CloseScreensaver();
   ShutdownKioskModeScreensaver();
 }
 
 void KioskModeScreensaver::ActiveNotify() {
   // User is active, log us in.
   ExistingUserController* controller =
       ExistingUserController::current_controller();
 
   if (controller) {
     // Logging in will shut us down, removing the screen saver.
     controller->LoginAsDemoUser();
   } else {
     // Remove the screensaver so the user can at least use the underlying
     // login screen to be able to log in.
-    browser::CloseScreensaverDialog();
+    ash::CloseScreensaver();
   }
 }
 
 static KioskModeScreensaver* g_kiosk_mode_screensaver = NULL;
 
 void InitializeKioskModeScreensaver() {
   if (g_kiosk_mode_screensaver) {
     LOG(WARNING) << "Screensaver was already initialized";
     return;
   }
 
   g_kiosk_mode_screensaver = new KioskModeScreensaver();
 }
 
 void ShutdownKioskModeScreensaver() {
   delete g_kiosk_mode_screensaver;
   g_kiosk_mode_screensaver = NULL;
 }
 
 }  // namespace chromeos