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..50583be50432fb64d4a6905fef1e84cf2e43f85d 100644
--- a/chrome/browser/chromeos/login/screens/host_pairing_screen.h
+++ b/chrome/browser/chromeos/login/screens/host_pairing_screen.h
@@ -9,6 +9,7 @@
 #include "chrome/browser/chromeos/login/enrollment/enterprise_enrollment_helper.h"
 #include "chrome/browser/chromeos/login/screens/base_screen.h"
 #include "chrome/browser/chromeos/login/screens/host_pairing_screen_actor.h"
+#include "chrome/browser/chromeos/policy/active_directory_join_delegate.h"
 #include "components/login/screens/screen_context.h"
 #include "components/pairing/host_pairing_controller.h"
 
@@ -18,7 +19,8 @@ class HostPairingScreen
     : public BaseScreen,
       public pairing_chromeos::HostPairingController::Observer,
       public HostPairingScreenActor::Delegate,
-      public EnterpriseEnrollmentHelper::EnrollmentStatusConsumer {
+      public EnterpriseEnrollmentHelper::EnrollmentStatusConsumer,
+      public ActiveDirectoryJoinDelegate {
  public:
   class Delegate {
    public:
@@ -73,21 +75,24 @@ class HostPairingScreen
   void OnDeviceAttributeUploadCompleted(bool success) override;
   void OnDeviceAttributeUpdatePermission(bool granted) override;
 
+  // Overriden from ActiveDirectoryJoinDelegate:
+  void JoinDomain(OnDomainJoinedCallback on_joined_callback) override;
+
   // Used as a callback for EnterpriseEnrollmentHelper::ClearAuth.
   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;
 
   base::WeakPtrFactory<HostPairingScreen> weak_ptr_factory_;