diff --git a/quic/test_tools/quic_path_validator_peer.h b/quic/test_tools/quic_path_validator_peer.h
new file mode 100644
index 0000000..5b2b56c
--- /dev/null
+++ b/quic/test_tools/quic_path_validator_peer.h
@@ -0,0 +1,20 @@
+// Copyright (c) 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef QUICHE_QUIC_TEST_TOOLS_QUIC_PATH_VALIDATOR_PEER_H_
+#define QUICHE_QUIC_TEST_TOOLS_QUIC_PATH_VALIDATOR_PEER_H_
+
+#include "net/third_party/quiche/src/quic/core/quic_path_validator.h"
+
+namespace quic {
+namespace test {
+
+class QuicPathValidatorPeer {
+ public:
+  static QuicAlarm* retry_timer(QuicPathValidator* validator);
+};
+
+}  // namespace test
+}  // namespace quic
+#endif  // QUICHE_QUIC_TEST_TOOLS_QUIC_PATH_VALIDATOR_PEER_H_