Add missing includes.

PiperOrigin-RevId: 472461299
diff --git a/quiche/quic/core/quic_connection_test.cc b/quiche/quic/core/quic_connection_test.cc
index 33d4e72..f8822e5 100644
--- a/quiche/quic/core/quic_connection_test.cc
+++ b/quiche/quic/core/quic_connection_test.cc
@@ -37,6 +37,7 @@
 #include "quiche/quic/platform/api/quic_expect_bug.h"
 #include "quiche/quic/platform/api/quic_flags.h"
 #include "quiche/quic/platform/api/quic_ip_address.h"
+#include "quiche/quic/platform/api/quic_ip_address_family.h"
 #include "quiche/quic/platform/api/quic_logging.h"
 #include "quiche/quic/platform/api/quic_socket_address.h"
 #include "quiche/quic/platform/api/quic_test.h"