Removing FRE UI for unicorn accounts.

chrome/browser/supervised_user/child_accounts/child_account_service.h

Index: chrome/browser/supervised_user/child_accounts/child_account_service.h
diff --git a/chrome/browser/supervised_user/child_accounts/child_account_service.h b/chrome/browser/supervised_user/child_accounts/child_account_service.h
index 4a1519670d151ea72d94199ac39cda71cf43e7db..958260ba73441a3bd55273bfedf62e952578d9e4 100644
--- a/chrome/browser/supervised_user/child_accounts/child_account_service.h
+++ b/chrome/browser/supervised_user/child_accounts/child_account_service.h
@@ -11,8 +11,10 @@
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
+#include "chrome/browser/supervised_user/child_accounts/child_account_status_observer.h"
 #include "chrome/browser/supervised_user/child_accounts/family_info_fetcher.h"
 #include "chrome/browser/supervised_user/supervised_user_service.h"
 #include "components/keyed_service/core/keyed_service.h"
@@ -24,6 +26,10 @@ namespace base {
 class FilePath;
 }
 
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
 class Profile;
 
 // This class handles detection of child accounts (on sign-in as well as on
@@ -36,6 +42,9 @@ class ChildAccountService : public KeyedService,
  public:
   ~ChildAccountService() override;
 
+  // Registers the preferences related to Child Account Service.
+  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
+
   void Init();
 
   // Sets whether the signed-in account is a child account.
@@ -43,9 +52,15 @@ class ChildAccountService : public KeyedService,
   // happens outside of this class (like Android).
   void SetIsChildAccount(bool is_child_account);
 
+  bool IsChildAccountStatusKnown();
+
   // KeyedService:
   void Shutdown() override;
 
+  // Adds/removes observer.
+  void AddStatusObserver(ChildAccountStatusObserver* observer);
+  void RemoveStatusObserver(ChildAccountStatusObserver* observer);
+
  private:
   friend class ChildAccountServiceFactory;
   // Use |ChildAccountServiceFactory::GetForProfile(...)| to get an instance of
@@ -109,6 +124,8 @@ class ChildAccountService : public KeyedService,
   base::OneShotTimer<ChildAccountService> family_fetch_timer_;
   net::BackoffEntry family_fetch_backoff_;
 
+  ObserverList<ChildAccountStatusObserver> observer_list_;
+
   base::WeakPtrFactory<ChildAccountService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildAccountService);