Revert of Add account_type into AccountId

chrome/browser/ui/webui/options/chromeos/user_image_source.cc

Index: chrome/browser/ui/webui/options/chromeos/user_image_source.cc
diff --git a/chrome/browser/ui/webui/options/chromeos/user_image_source.cc b/chrome/browser/ui/webui/options/chromeos/user_image_source.cc
index c5858ea46f9bacbda5f3062066928958a4060e22..d302cbfb181902662e122fce7a9f3541074a0405 100644
--- a/chrome/browser/ui/webui/options/chromeos/user_image_source.cc
+++ b/chrome/browser/ui/webui/options/chromeos/user_image_source.cc
@@ -38,7 +38,7 @@
   if (!status) {
     LOG(WARNING) << "Failed to deserialize account_id.";
     account_id = user_manager::known_user::GetAccountId(
-        serialized_account_id, std::string() /* id */, AccountType::UNKNOWN);
+        serialized_account_id, std::string() /* gaia_id */);
   }
   *email = account_id.GetUserEmail();
 }