cros: Move IsUserSupervised and IsUserChild off SystemTrayDelegate

ash/test/test_session_controller_client.cc

Index: ash/test/test_session_controller_client.cc
diff --git a/ash/test/test_session_controller_client.cc b/ash/test/test_session_controller_client.cc
index 6492a7c94ae5f21a912aece59227e863b4c1c46e..19f98b7e0fefb242110712d67368e05f3aa0d838 100644
--- a/ash/test/test_session_controller_client.cc
+++ b/ash/test/test_session_controller_client.cc
@@ -97,10 +97,11 @@ void TestSessionControllerClient::CreatePredefinedUserSessions(int count) {
 
 void TestSessionControllerClient::AddUserSession(
     const std::string& display_email,
+    user_manager::UserType user_type,
     bool enable_settings) {
   mojom::UserSessionPtr session = mojom::UserSession::New();
   session->session_id = ++fake_session_id_;
-  session->type = user_manager::USER_TYPE_REGULAR;
+  session->type = user_type;
   session->account_id =
       AccountId::FromUserEmail(GetUserIdFromEmail(display_email));
   session->display_name = "Über tray Über tray Über tray Über tray";