Chromad: Use DM server reply to determine enrollment type

chrome/browser/chromeos/login/screens/host_pairing_screen.h

Index: chrome/browser/chromeos/login/screens/host_pairing_screen.h
diff --git a/chrome/browser/chromeos/login/screens/host_pairing_screen.h b/chrome/browser/chromeos/login/screens/host_pairing_screen.h
index b209d5d30c2243f11d43b13a14341f6180bd096b..8aa4cffac2722b56eb152c3c91dab6b11df4b2d8 100644
--- a/chrome/browser/chromeos/login/screens/host_pairing_screen.h
+++ b/chrome/browser/chromeos/login/screens/host_pairing_screen.h
@@ -14,6 +14,8 @@
 
 namespace chromeos {
 
+class FakeActiveDirectoryJoinDelegate;
+
 class HostPairingScreen
     : public BaseScreen,
       public pairing_chromeos::HostPairingController::Observer,
@@ -77,17 +79,19 @@ class HostPairingScreen
   void OnAuthCleared();
   void OnAnyEnrollmentError();
 
-  Delegate* delegate_;
+  Delegate* delegate_ = nullptr;
 
-  HostPairingScreenActor* actor_;
+  HostPairingScreenActor* actor_ = nullptr;
 
   // Controller performing pairing. Owned by the wizard controller.
-  pairing_chromeos::HostPairingController* remora_controller_;
+  pairing_chromeos::HostPairingController* remora_controller_ = nullptr;
 
   std::unique_ptr<EnterpriseEnrollmentHelper> enrollment_helper_;
 
   // Current stage of pairing process.
-  Stage current_stage_;
+  Stage current_stage_ = pairing_chromeos::HostPairingController::STAGE_NONE;
+
+  std::unique_ptr<FakeActiveDirectoryJoinDelegate> fake_ad_join_delegate_;
 
   base::WeakPtrFactory<HostPairingScreen> weak_ptr_factory_;