Internal change

PiperOrigin-RevId: 468331059
diff --git a/build/source_list.bzl b/build/source_list.bzl
index 90dd052..9092865 100644
--- a/build/source_list.bzl
+++ b/build/source_list.bzl
@@ -778,6 +778,7 @@
     "quic/test_tools/first_flight.h",
     "quic/test_tools/limited_mtu_test_writer.h",
     "quic/test_tools/mock_clock.h",
+    "quic/test_tools/mock_connection_id_generator.h",
     "quic/test_tools/mock_quic_client_promised_info.h",
     "quic/test_tools/mock_quic_dispatcher.h",
     "quic/test_tools/mock_quic_session_visitor.h",