[CUPS] Fix the browser crash in CUPS settings UI in guest mode.

chrome/browser/ui/webui/options/browser_options_handler.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/options/browser_options_handler.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <utility>
@@ skipping 688 matching lines @@
 
 #if !defined(OS_CHROMEOS)
   values->SetBoolean(
       "gpuEnabledAtStart",
       g_browser_process->gpu_mode_manager()->initial_gpu_mode_pref());
 #endif
 
 #if defined(OS_CHROMEOS)
   values->SetBoolean("cupsPrintEnabled",
                      base::CommandLine::ForCurrentProcess()->HasSwitch(
-                         ::switches::kEnableNativeCups));
+                         ::switches::kEnableNativeCups) &&
+                         !profile->IsOffTheRecord());
   values->SetString("cupsPrintLearnMoreURL",
                     chrome::kChromeUIMdCupsSettingsURL);
 #endif  // defined(OS_CHROMEOS)
 
 #if BUILDFLAG(ENABLE_SERVICE_DISCOVERY)
   values->SetBoolean("cloudPrintHideNotificationsCheckbox",
                      !cloud_print::PrivetNotificationService::IsEnabled());
 #endif
 
   values->SetBoolean("cloudPrintShowMDnsOptions",
@@ skipping 1570 matching lines @@
 
 bool BrowserOptionsHandler::IsDeviceOwnerProfile() {
 #if defined(OS_CHROMEOS)
   return chromeos::ProfileHelper::IsOwnerProfile(Profile::FromWebUI(web_ui()));
 #else
   return true;
 #endif
 }
 
 }  // namespace options