Skip RestartToApplyPerSessionFlags for lock screen apps profile

BUG=715781

Change-Id: Id936a1c57a8d8d5796cec0bc013af4cce26f16b8
Reviewed-on: https://chromium-review.googlesource.com/580647Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Commit-Queue: Toni Barzic <tbarzic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488508}

chrome/browser/chromeos/login/session/user_session_manager.cc

@@ -768,8 +768,10 @@ bool UserSessionManager::RestartToApplyPerSessionFlagsIfNeed(
   if (!session_manager_client->SupportsRestartToApplyUserFlags())
     return false;
 
-  if (ProfileHelper::IsSigninProfile(profile))
+  if (ProfileHelper::IsSigninProfile(profile) ||
+      ProfileHelper::IsLockScreenAppProfile(profile)) {
     return false;
+  }
 
   // Kiosk sessions keeps the startup flags.
   if (user_manager::UserManager::Get() &&