Prevent kiosk launch if OOBE is not completed

Bug: 854101
TBR: alemate@chromium.org
Change-Id: If980f6b3e45fd7f35378e197a2781d9ce033b28c
Reviewed-on: https://chromium-review.googlesource.com/c/1251536
Commit-Queue: Denis Kuznetsov <antrim@chromium.org>
Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Reviewed-by: Sergey Poromov <poromov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#596891}

chrome/browser/chromeos/login/auto_launched_kiosk_browsertest.cc

@@ -419,6 +419,7 @@ class AutoLaunchedKioskTest : public extensions::ExtensionApiTest {
             .Set("PublicAccounts",
                  extensions::ListBuilder().Append(GetTestAppUserId()).Build())
             .Build();
+    local_state->SetKey(prefs::kOobeComplete, base::Value(true));
 
     JSONFileValueSerializer serializer(
         user_data_path.Append(chrome::kLocalStateFilename));

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

@@ -26,6 +26,7 @@
 #include "chrome/browser/chromeos/login/login_wizard.h"
 #include "chrome/browser/chromeos/login/screens/sync_consent_screen.h"
 #include "chrome/browser/chromeos/login/session/user_session_manager.h"
+#include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/chromeos/policy/app_install_event_log_manager_wrapper.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
@@ -63,7 +64,11 @@ bool ShouldAutoLaunchKioskApp(const base::CommandLine& command_line) {
   return command_line.HasSwitch(switches::kLoginManager) &&
          !command_line.HasSwitch(switches::kForceLoginManagerInTests) &&
          app_manager->IsAutoLaunchEnabled() &&
-         KioskAppLaunchError::Get() == KioskAppLaunchError::NONE;
+         KioskAppLaunchError::Get() == KioskAppLaunchError::NONE &&
+         // IsOobeCompleted() is needed to prevent kiosk session start in case
+         // of enterprise rollback, when keeping the enrollment, policy, not
+         // clearing TPM, but wiping stateful partition.
+         StartupUtils::IsOobeCompleted();
 }
 
 // Starts kiosk app auto launch and shows the splash screen.