Ignore C++ warnings in auto-generated proto headers

This CL fixes the macOS build issues.

gfe-relnote: n/a, refactoring headers, not protected

PiperOrigin-RevId: 254480126
Change-Id: I22be854c33992b71fd42735a10788dea272370d6
diff --git a/quic/core/quic_connection.h b/quic/core/quic_connection.h
index 9bb00b2..7a7b62e 100644
--- a/quic/core/quic_connection.h
+++ b/quic/core/quic_connection.h
@@ -26,7 +26,7 @@
 
 #include "net/third_party/quiche/src/quic/core/crypto/quic_decrypter.h"
 #include "net/third_party/quiche/src/quic/core/crypto/quic_encrypter.h"
-#include "net/third_party/quiche/src/quic/core/proto/cached_network_parameters.pb.h"
+#include "net/third_party/quiche/src/quic/core/proto/cached_network_parameters_proto.h"
 #include "net/third_party/quiche/src/quic/core/quic_alarm.h"
 #include "net/third_party/quiche/src/quic/core/quic_alarm_factory.h"
 #include "net/third_party/quiche/src/quic/core/quic_blocked_writer_interface.h"