Don't allow restarting to apply custom flags when supervised user creation flow is active

chrome/browser/chromeos/login/login_utils.cc

Index: chrome/browser/chromeos/login/login_utils.cc
diff --git a/chrome/browser/chromeos/login/login_utils.cc b/chrome/browser/chromeos/login/login_utils.cc
index 7921718b7bc14aaed656b68b0ed7118585ace04f..ab88da06d111b38002ca59b2dc687fb27c64baf2 100644
--- a/chrome/browser/chromeos/login/login_utils.cc
+++ b/chrome/browser/chromeos/login/login_utils.cc
@@ -147,6 +147,11 @@ bool CanPerformEarlyRestart() {
   if (!base::SysInfo::IsRunningOnChromeOS())
     return false;
 
+  if (!ChromeUserManager::Get()->GetCurrentUserFlow()->
+          SupportsEarlyRestartToApplyFlags()) {
+    return false;
+  }
+
   const ExistingUserController* controller =
       ExistingUserController::current_controller();
   if (!controller)