Removing FRE UI for unicorn accounts.

chrome/browser/supervised_user/child_accounts/child_account_service.cc

Index: chrome/browser/supervised_user/child_accounts/child_account_service.cc
diff --git a/chrome/browser/supervised_user/child_accounts/child_account_service.cc b/chrome/browser/supervised_user/child_accounts/child_account_service.cc
index 25eb5ce9e906367e9d6c354caafe7c16257112d4..63c1f68e66f3d8c769de20177dcdc6cd01d3f735 100644
--- a/chrome/browser/supervised_user/child_accounts/child_account_service.cc
+++ b/chrome/browser/supervised_user/child_accounts/child_account_service.cc
@@ -71,6 +71,7 @@ ChildAccountService::ChildAccountService(Profile* profile)
     : profile_(profile), active_(false),
       flag_fetch_backoff_(&kBackoffPolicy),
       family_fetch_backoff_(&kBackoffPolicy),
+      account_status_(UNKNOWN),
       weak_ptr_factory_(this) {}
 
 ChildAccountService::~ChildAccountService() {}
@@ -101,6 +102,10 @@ void ChildAccountService::Init() {
     StartFetchingServiceFlags();
 }
 
+bool ChildAccountService::IsChildAccountStatusKnown() {
+  return account_status_ != UNKNOWN;
+}
+
 void ChildAccountService::Shutdown() {
   family_fetcher_.reset();
   CancelFetchingServiceFlags();
@@ -109,6 +114,16 @@ void ChildAccountService::Shutdown() {
   SigninManagerFactory::GetForProfile(profile_)->RemoveObserver(this);
 }
 
+void ChildAccountService::AddStatusObserver(
+    ChildAccountStatusObserver* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void ChildAccountService::RemoveStatusObserver(
+    ChildAccountStatusObserver* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
 bool ChildAccountService::SetActive(bool active) {
   if (!profile_->IsChild() && !active_)
     return false;
@@ -301,6 +316,14 @@ void ChildAccountService::OnFlagsFetched(
   bool is_child_account =
       std::find(flags.begin(), flags.end(),
                 kIsChildAccountServiceFlagName) != flags.end();
+
+  ChildAccountStatus old_status = account_status_;
+  account_status_ = is_child_account ? CHILD : NON_CHILD;

[Marc Treib, 2015/03/04 16:31:48]

"TODO(treib): Add a pref for this, so the info will survive Chrome restarts."

[merkulova, 2015/03/04 19:06:49]

Done.

+  if (old_status != account_status_) {
+    FOR_EACH_OBSERVER(ChildAccountStatusObserver, observer_list_,
+                      OnChildAccountStatusChanged());
+  }
+
   SetIsChildAccount(is_child_account);
 
   ScheduleNextStatusFlagUpdate(