Add debug visitor for SETTINGS sent.

gfe-relnote: protected by v99 flag that is disabled in gfe.
PiperOrigin-RevId: 271645953
Change-Id: I421031f12100db05f316f6509e8085c5700ee1b7
diff --git a/quic/core/http/quic_spdy_session.h b/quic/core/http/quic_spdy_session.h
index 40ad070..3d82cd7 100644
--- a/quic/core/http/quic_spdy_session.h
+++ b/quic/core/http/quic_spdy_session.h
@@ -9,6 +9,7 @@
 #include <memory>
 #include <string>
 
+#include "net/third_party/quiche/src/quic/core/http/http_frames.h"
 #include "net/third_party/quiche/src/quic/core/http/quic_header_list.h"
 #include "net/third_party/quiche/src/quic/core/http/quic_headers_stream.h"
 #include "net/third_party/quiche/src/quic/core/http/quic_receive_control_stream.h"
@@ -70,7 +71,10 @@
   virtual void OnPeerQpackDecoderStreamCreated(QuicStreamId /*stream_id*/) = 0;
 
   // Called when SETTINGS frame is received.
-  virtual void OnSettingsFrame(const SettingsFrame& /*frame*/) = 0;
+  virtual void OnSettingsFrameReceived(const SettingsFrame& /*frame*/) = 0;
+
+  // Called when SETTINGS frame is sent.
+  virtual void OnSettingsFrameSent(const SettingsFrame& /*frame*/) = 0;
 };
 
 // A QUIC session for HTTP.