Fix update and enrollment flow

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

 // Copyright 2014 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/chromeos/login/screens/host_pairing_screen.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "components/pairing/host_pairing_controller.h"
 
@@ skipping 43 matching lines @@
     actor_->Hide();
 }
 
 std::string HostPairingScreen::GetName() const {
   return WizardController::kHostPairingScreenName;
 }
 
 void HostPairingScreen::PairingStageChanged(Stage new_stage) {
   std::string desired_page;
   switch (new_stage) {
-    case HostPairingController::STAGE_NONE:
-    case HostPairingController::STAGE_INITIALIZATION_ERROR: {
-      break;
-    }
     case HostPairingController::STAGE_WAITING_FOR_CONTROLLER:
     case HostPairingController::STAGE_WAITING_FOR_CONTROLLER_AFTER_UPDATE: {
       desired_page = kPageWelcome;
       break;
     }
     case HostPairingController::STAGE_WAITING_FOR_CODE_CONFIRMATION: {
       desired_page = kPageCodeConfirmation;
       context_.SetString(kContextKeyConfirmationCode,
                          controller_->GetConfirmationCode());
       break;
     }
-    case HostPairingController::STAGE_UPDATING: {
-      desired_page = kPageUpdate;
-      context_.SetDouble(kContextKeyUpdateProgress, 0.0);
-      break;
-    }
-    case HostPairingController::STAGE_WAITING_FOR_CREDENTIALS: {
-      controller_->RemoveObserver(this);
-      get_screen_observer()->OnExit(
-          WizardController::HOST_PAIRING_FINISHED);
-      // TODO(achuith, zork): Remove the rest of the stages.
-      break;
-    }
-    case HostPairingController::STAGE_ENROLLING: {
-      desired_page = kPageEnrollment;
-      context_.SetString(kContextKeyEnrollmentDomain,
-                         controller_->GetEnrollmentDomain());
-      break;
-    }
-    case HostPairingController::STAGE_ENROLLMENT_ERROR: {
-      desired_page = kPageEnrollmentError;
-      break;
-    }
     case HostPairingController::STAGE_PAIRING_DONE: {
       desired_page = kPagePairingDone;
       break;
     }
-    case HostPairingController::STAGE_FINISHED: {
-      // This page is closed in EnrollHost.
+    case HostPairingController::STAGE_UPDATING: {
+      controller_->RemoveObserver(this);
+      get_screen_observer()->OnExit(WizardController::HOST_PAIRING_FINISHED);
       break;
     }
+    default:
+      break;
   }
   current_stage_ = new_stage;
   context_.SetString(kContextKeyDeviceName, controller_->GetDeviceName());
   context_.SetString(kContextKeyPage, desired_page);
   CommitContextChanges();
 }
 
 void HostPairingScreen::ConfigureHost(bool accepted_eula,
                                       const std::string& lang,
                                       const std::string& timezone,
                                       bool send_reports,
                                       const std::string& keyboard_layout) {
   // TODO(zork): Get configuration from UI and send to Host.
   // (http://crbug.com/405744)
 }
 
 void HostPairingScreen::EnrollHost(const std::string& auth_token) {
   NOTREACHED();
 }
 
 void HostPairingScreen::OnActorDestroyed(HostPairingScreenActor* actor) {
   if (actor_ == actor)
     actor_ = NULL;
 }
 
 }  // namespace chromeos