Chrome OS: Force OOBE Powerwash screen to restart mode when user is logged in.

This cl ensures Powerwash screen will ask for restart if user has already
logged in.

Bug: 899050
Change-Id: I003f4e323e59995767f882ca4f529674f3e07e76
Reviewed-on: https://chromium-review.googlesource.com/c/1307066Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Commit-Queue: Alexander Alekseev <alemate@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603798}

chrome/browser/chromeos/login/screens/reset_screen.cc

@@ -137,8 +137,9 @@ void ResetScreen::Show() {
 
   ContextEditor context_editor = GetContextEditor();
 
-  bool restart_required = !base::CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kFirstExecAfterBoot);
+  bool restart_required = user_manager::UserManager::Get()->IsUserLoggedIn() ||
+                          !base::CommandLine::ForCurrentProcess()->HasSwitch(
+                              switches::kFirstExecAfterBoot);
   if (restart_required) {
     context_editor.SetInteger(kContextKeyScreenState, STATE_RESTART_REQUIRED);
     dialog_type = reset::DIALOG_SHORTCUT_RESTART_REQUIRED;