kiosk: Fix kiosk session restart

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index f06a1e5c483865416e641041343ff71cead3c29c..2ad1fc58f33a9818ed55c73892acc54a765fed27 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -532,8 +532,9 @@ void ChromeBrowserMainPartsChromeos::PreProfileInit() {
 
     user_manager::UserManager* user_manager = user_manager::UserManager::Get();
 
-    if (policy::IsDeviceLocalAccountUser(account_id.GetUserEmail(), NULL) &&
-        !user_manager->IsKnownUser(account_id)) {
+    if (policy::IsDeviceLocalAccountUser(account_id.GetUserEmail(), nullptr) &&
+        !user_manager->IsKnownUser(account_id) &&

[bartfab (slow), 2016/04/07 14:55:42]

Why is the kiosk user not a known user? We explicitly add public session users
to the known user list. Is it not just an oversight that we skip kiosk users?

[xiyuan, 2016/04/07 21:43:57]

Makes sense to make kiosk apps part of known users. I will do it as the fix.

+        !KioskAppManager::Get()->GetAppByAccountId(account_id, nullptr)) {
       // When a device-local account is removed, its policy is deleted from disk
       // immediately. If a session using this account happens to be in progress,
       // the session is allowed to continue with policy served from an in-memory