Add an enrolling state for consumer management section in settings page.

chrome/browser/chromeos/policy/consumer_management_service.h

Index: chrome/browser/chromeos/policy/consumer_management_service.h
diff --git a/chrome/browser/chromeos/policy/consumer_management_service.h b/chrome/browser/chromeos/policy/consumer_management_service.h
index d4f1e2ba73cf473b727336daa3a1c21555a5208e..8cd5cccb0f9dade7985d1ac5cadc7af68eb5621d 100644
--- a/chrome/browser/chromeos/policy/consumer_management_service.h
+++ b/chrome/browser/chromeos/policy/consumer_management_service.h
@@ -12,6 +12,7 @@
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/notifications/notification_delegate.h"
 #include "chromeos/dbus/dbus_method_call_status.h"
@@ -26,6 +27,7 @@ class ProfileOAuth2TokenService;
 
 namespace chromeos {
 class CryptohomeClient;
+class DeviceSettingsService;
 }
 
 namespace content {
@@ -75,6 +77,13 @@ class ConsumerManagementService : public content::NotificationObserver,
     ENROLLMENT_LAST,            // This should always be the last one.
   };
 
+  class Observer {
+   public:
+    // Called when the enrollment state is changed.

[bartfab (slow), 2014/08/20 14:40:02]

Nit: s/is changed/changes/

[davidyu, 2014/08/21 09:40:29]

Done.

+    virtual void OnConsumerManagementEnrollmentStateChanged(
+        ConsumerManagementService* service) = 0;

[bartfab (slow), 2014/08/20 14:40:02]

Why not just pass the state here instead of the entire |service|?

[davidyu, 2014/08/21 09:40:29]

Done.

+  };
+
   // GetOwner() invokes this with an argument set to the owner user ID,
   // or an empty string on failure.
   typedef base::Callback<void(const std::string&)> GetOwnerCallback;
@@ -82,13 +91,18 @@ class ConsumerManagementService : public content::NotificationObserver,
   // SetOwner() invokes this with an argument indicating success or failure.
   typedef base::Callback<void(bool)> SetOwnerCallback;
 
-  explicit ConsumerManagementService(chromeos::CryptohomeClient* client);
+  ConsumerManagementService(
+      chromeos::CryptohomeClient* client,
+      chromeos::DeviceSettingsService* device_settings_service);
 
   virtual ~ConsumerManagementService();
 
   // Registers prefs.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
+  void AddObserver(Observer* observer);
+  void RemoveObserver(Observer* observer);
+
   // Returns the enrollment state.
   ConsumerEnrollmentState GetEnrollmentState() const;
 
@@ -102,6 +116,15 @@ class ConsumerManagementService : public content::NotificationObserver,
   // |callback| is invoked with an agument indicating success or failure.
   void SetOwner(const std::string& user_id, const SetOwnerCallback& callback);
 
+  // Returns true if the device is consumer managed.
+  bool IsEnrolled() const;
+
+  // Returns true if the enrollment is in progress.

[bartfab (slow), 2014/08/20 14:40:02]

Nit: s/the/consumer/

[davidyu, 2014/08/21 09:40:29]

Done.

+  bool IsEnrolling() const;
+
+  // Returns true if the unenrollment is in progress.

[bartfab (slow), 2014/08/20 14:40:02]

Nit: s/the/consumer/

[davidyu, 2014/08/21 09:40:29]

Done.

+  bool IsUnenrolling() const;
+
   // content::NotificationObserver implmentation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ -212,7 +235,10 @@ class ConsumerManagementService : public content::NotificationObserver,
       const base::string16& button_label,
       const base::Closure& button_click_callback) const;
 
+  void NotifyEnrollmentStateChanged();
+
   chromeos::CryptohomeClient* client_;
+  chromeos::DeviceSettingsService* device_settings_service_;
 
   std::string enrolling_account_id_;
   Profile* enrolling_profile_;
@@ -221,6 +247,7 @@ class ConsumerManagementService : public content::NotificationObserver,
 
   scoped_ptr<OAuth2TokenService::Request> token_request_;
   content::NotificationRegistrar registrar_;
+  ObserverList<Observer, true> observers_;
   base::WeakPtrFactory<ConsumerManagementService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ConsumerManagementService);