Implemented consumer management unenrollment.

chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h

Index: chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h
diff --git a/chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h b/chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h
index df82cdf870a22afbecf4526b69ab4547fcebe7c0..4d8c42762b3b370c900c804af0df1e0f4891df85 100644
--- a/chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h
+++ b/chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h
@@ -134,16 +134,22 @@ class BrowserPolicyConnectorChromeOS
 
   // DeviceCloudPolicyManagerChromeOS::Observer:
   void OnDeviceCloudPolicyManagerConnected() override;
+  void OnDeviceCloudPolicyManagerDisconnected() override;
 
  private:
   // Set the timezone as soon as the policies are available.
   void SetTimezoneIfPolicyAvailable();
 
+  // Restarts the device cloud policy initializer, because the device's
+  // registration status changed from registered to unregistered.
+  void RestartDeviceCloudPolicyInitializer();
+
   // Components of the device cloud policy implementation.
   scoped_ptr<ServerBackedStateKeysBroker> state_keys_broker_;
   scoped_ptr<EnterpriseInstallAttributes> install_attributes_;
   scoped_ptr<ConsumerManagementService> consumer_management_service_;
   DeviceCloudPolicyManagerChromeOS* device_cloud_policy_manager_;
+  PrefService* local_state_;
   scoped_ptr<DeviceManagementService> consumer_device_management_service_;
   scoped_ptr<DeviceCloudPolicyInitializer> device_cloud_policy_initializer_;
   scoped_ptr<DeviceLocalAccountPolicyService>