Implemented consumer management unenrollment.

chrome/browser/chromeos/policy/consumer_unenrollment_handler.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/policy/consumer_unenrollment_handler.h"
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "chrome/browser/browser_process.h"

[bartfab (slow), 2014/11/28 13:25:17]

Nit: Not used.

[davidyu, 2014/12/01 17:05:22]

Done.

+#include "chrome/browser/browser_process_platform_part.h"

[bartfab (slow), 2014/11/28 13:25:17]

Nit: Not used.

[davidyu, 2014/12/01 17:05:22]

Done.

+#include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"

[bartfab (slow), 2014/11/28 13:25:17]

Nit: Not used.

[davidyu, 2014/12/01 17:05:21]

Done.

+#include "chrome/browser/chromeos/policy/consumer_management_service.h"
+#include "chrome/browser/chromeos/policy/consumer_management_stage.h"
+#include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
+#include "chrome/browser/chromeos/settings/device_settings_service.h"
+#include "policy/proto/device_management_backend.pb.h"
+
+namespace em = enterprise_management;
+
+namespace policy {
+
+ConsumerUnenrollmentHandler::ConsumerUnenrollmentHandler(
+    chromeos::DeviceSettingsService* device_settings_service,
+    ConsumerManagementService* consumer_management_service,
+    DeviceCloudPolicyManagerChromeOS* device_cloud_policy_manager)
+    : device_settings_service_(device_settings_service),
+      consumer_management_service_(consumer_management_service),
+      device_cloud_policy_manager_(device_cloud_policy_manager),
+      weak_factory_(this) {
+}
+
+ConsumerUnenrollmentHandler::~ConsumerUnenrollmentHandler() {
+}
+
+void ConsumerUnenrollmentHandler::Shutdown() {
+}
+
+void ConsumerUnenrollmentHandler::Start() {
+  device_cloud_policy_manager_->Unregister(

[bartfab (slow), 2014/11/28 13:25:18]

What if the user clicks the "unenroll" button again while unenrollment is still
in progress? This class should have a member that indicates whether unenrollment
is currently in progress and makes it ignore any further Start() calls during
that time.

[davidyu, 2014/12/01 17:05:21]

When the user clicks the unenroll button, it immediately changes the stage and
the option page, which observes the status change, will change the button to
"unenrolling" and disabled. In the current implementation it is safe and will
not have race condition, but I can add some sanity check here in case the code
gets refactored later.

+      base::Bind(&ConsumerUnenrollmentHandler::OnUnregistered,
+                 weak_factory_.GetWeakPtr()));
+}
+
+void ConsumerUnenrollmentHandler::OnUnregistered(bool success) {
+  if (!success) {
+    consumer_management_service_->SetStage(ConsumerManagementStage(
+        ConsumerManagementStage::UNENROLLMENT_DM_SERVER_FAILED));
+    LOG(ERROR) << "Failed to unregister and disconnect device cloud policy "
+               << "manager.";
+    return;
+  }
+
+  device_settings_service_->SetManagementSettings(
+      em::PolicyData::LOCAL_OWNER,
+      "", // request token
+      "", // device ID
+      base::Bind(&ConsumerUnenrollmentHandler::OnManagementSettingsSet,
+                 weak_factory_.GetWeakPtr()));
+}
+
+void ConsumerUnenrollmentHandler::OnManagementSettingsSet() {
+  if (device_settings_service_->status() !=
+      chromeos::DeviceSettingsService::STORE_SUCCESS) {
+    consumer_management_service_->SetStage(ConsumerManagementStage(
+        ConsumerManagementStage::UNENROLLMENT_UPDATE_DEVICE_SETTINGS_FAILED));
+    LOG(ERROR) << "Failed to unset request token and device ID.";
+    return;
+  }
+
+  consumer_management_service_->SetStage(ConsumerManagementStage(
+      ConsumerManagementStage::UNENROLLMENT_SUCCESS));
+
+  // Disconnecting the device cloud policy manager will restart the device
+  // cloud policy initializer. So this must be done after the management
+  // settings are updated, so that the initializer won't reconnect the manager.
+  device_cloud_policy_manager_->Disconnect();
+}
+
+}  // namespace policy