gfe-relnote: Pass receive_timestamp to OnMessageAcked().

When receive timestamps are turned on and message frames are enabled, this will
make receive timestamps available to the session whenever a message is acked.

This will be used for RTP over QUIC, where ack timestamps are required for RTP's
congestion controller and media adaptation.  (The current implementation uses
QUIC like a tunnel and disables its congestion control.)

Not flag-protected: no change in behavior, just a change in what is visible
where.

PiperOrigin-RevId: 250703980
Change-Id: I01bcee29d5dfb808771c54e4fd14ebbfa8750375
diff --git a/quic/test_tools/simple_session_notifier.h b/quic/test_tools/simple_session_notifier.h
index e7d4fdc..25c9941 100644
--- a/quic/test_tools/simple_session_notifier.h
+++ b/quic/test_tools/simple_session_notifier.h
@@ -65,7 +65,8 @@
 
   // SessionNotifierInterface methods:
   bool OnFrameAcked(const QuicFrame& frame,
-                    QuicTime::Delta ack_delay_time) override;
+                    QuicTime::Delta ack_delay_time,
+                    QuicTime receive_timestamp) override;
   void OnStreamFrameRetransmitted(const QuicStreamFrame& frame) override {}
   void OnFrameLost(const QuicFrame& frame) override;
   void RetransmitFrames(const QuicFrames& frames,