Added additional logging for strange error messages.

BUG=263527
TEST=none

Review URL: https://codereview.chromium.org/70173007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235819 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/webui/chromeos/login/core_oobe_handler.cc

@@ -140,6 +140,7 @@ void CoreOobeHandler::ShowSignInError(
     const std::string& error_text,
     const std::string& help_link_text,
     HelpAppLauncher::HelpTopic help_topic_id) {
+  LOG(ERROR) << "CoreOobeHandler::ShowSignInError: error_text=" << error_text;
   CallJS("showSignInError", login_attempts, error_text,
          help_link_text, static_cast<int>(help_topic_id));
 }