Add kiosk browser tests for network configuration.

chrome/browser/chrome_notification_types.h

Index: chrome/browser/chrome_notification_types.h
diff --git a/chrome/browser/chrome_notification_types.h b/chrome/browser/chrome_notification_types.h
index 77203a6a428f6452b61a82f33e19f3ec876b4f17..7f2a684234257f9d83900153709330ef84e429ed 100644
--- a/chrome/browser/chrome_notification_types.h
+++ b/chrome/browser/chrome_notification_types.h
@@ -838,9 +838,16 @@ enum NotificationType {
   // 4. Boot into retail mode
   //    NOTIFICATION_LOGIN_OR_LOCK_WEBUI_VISIBLE
   // 5. Boot into kiosk mode
-  //    NOTIFICATION_KIOSK_APP_LAUNCHED
+  //    5.1 No network connectivity
+  //        NOTIFICATION_KIOSK_APP_LAUNCH_NO_NETWORK
+  //    5.2 Launch successful
+  //        NOTIFICATION_KIOSK_APP_LAUNCHED
   NOTIFICATION_LOGIN_OR_LOCK_WEBUI_VISIBLE,
 
+  // Sent when current screen is changed.
+  // Details are a OobeDisplay::ScreenTransition.
+  NOTIFICATION_CURRENT_SCREEN_CHANGED,

[xiyuan, 2013/09/05 02:36:10]

Let's not adding new notifications. Instead, try add an Observer interface to
OobeUI. If that feels like an overkill,  maybe add an Callback with a setter and
call the Callback when screen changes.

[Tim Song, 2013/09/05 21:57:43]

Done.

+
   // Sent when proxy dialog is closed.
   NOTIFICATION_LOGIN_PROXY_CHANGED,
 
@@ -862,6 +869,9 @@ enum NotificationType {
   // Sent when kiosk app list is loaded in UI.
   NOTIFICATION_KIOSK_APPS_LOADED,
 
+  // Sent when there is no network connectivity during kiosk app launch.
+  NOTIFICATION_KIOSK_APP_LAUNCH_NO_NETWORK,

[Tim Song, 2013/09/05 21:57:43]

I also removed this notification and replaced it with a callback.

+
   // Sent when a kiosk app is launched.
   NOTIFICATION_KIOSK_APP_LAUNCHED,