Fix crash in WizardController for Active Directory devices

chrome/browser/chromeos/login/wizard_controller.cc

Index: chrome/browser/chromeos/login/wizard_controller.cc
diff --git a/chrome/browser/chromeos/login/wizard_controller.cc b/chrome/browser/chromeos/login/wizard_controller.cc
index ceba540de4a9eb9ee28b7f74b2099b4f8aec07c2..3e572c9e2db2e9a3f0245691db37bf9b378c78a6 100644
--- a/chrome/browser/chromeos/login/wizard_controller.cc
+++ b/chrome/browser/chromeos/login/wizard_controller.cc
@@ -142,10 +142,11 @@ void RecordUMAHistogramForOOBEStepCompletionTime(std::string screen_name,
 }
 
 bool IsRemoraRequisition() {
-  return g_browser_process->platform_part()
-      ->browser_policy_connector_chromeos()
-      ->GetDeviceCloudPolicyManager()
-      ->IsRemoraRequisition();
+  policy::DeviceCloudPolicyManagerChromeOS* policy_manager =
+      g_browser_process->platform_part()
+          ->browser_policy_connector_chromeos()
+          ->GetDeviceCloudPolicyManager();
+  return policy_manager && policy_manager->IsRemoraRequisition();
 }
 
 bool IsSharkRequisition() {