Fix QUIC warnings in preparation for enabling them

gfe-relnote: n/a, compilation-only change
PiperOrigin-RevId: 253893322
Change-Id: I15917a1c5b325922850086277cfad5e3b4da20a4
diff --git a/quic/test_tools/packet_dropping_test_writer.h b/quic/test_tools/packet_dropping_test_writer.h
index eb4ad1c..92c8956 100644
--- a/quic/test_tools/packet_dropping_test_writer.h
+++ b/quic/test_tools/packet_dropping_test_writer.h
@@ -54,8 +54,9 @@
 
   void SetWritable() override;
 
-  char* GetNextWriteLocation(const QuicIpAddress& self_address,
-                             const QuicSocketAddress& peer_address) override {
+  char* GetNextWriteLocation(
+      const QuicIpAddress& /*self_address*/,
+      const QuicSocketAddress& /*peer_address*/) override {
     // If the wrapped writer supports zero-copy, disable it, because it is not
     // compatible with delayed writes in this class.
     return nullptr;