[Chrome OS] Attempt offline and online login simultaneously

chrome/browser/chromeos/login/mock_authenticator.h

Index: chrome/browser/chromeos/login/mock_authenticator.h
diff --git a/chrome/browser/chromeos/login/mock_authenticator.h b/chrome/browser/chromeos/login/mock_authenticator.h
index 7a833724c14aaf761c35d0cdfb1478b0f720dc3f..96e9ce1b7ea0beffc276dad69ed0e432ba7b7ec9 100644
--- a/chrome/browser/chromeos/login/mock_authenticator.h
+++ b/chrome/browser/chromeos/login/mock_authenticator.h
@@ -91,6 +91,12 @@ class MockAuthenticator : public Authenticator {
   virtual void ResyncEncryptedData(
       const GaiaAuthConsumer::ClientLoginResult& credentials) {}
 
+  virtual void RetryAuth(Profile* profile,
+                         const std::string& username,
+                         const std::string& password,
+                         const std::string& login_token,
+                         const std::string& login_captcha) {}
+
  private:
   std::string expected_username_;
   std::string expected_password_;