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/core/session_notifier_interface.h b/quic/core/session_notifier_interface.h
index 83fc0f1..a601c3e 100644
--- a/quic/core/session_notifier_interface.h
+++ b/quic/core/session_notifier_interface.h
@@ -19,7 +19,8 @@
   // Called when |frame| is acked. Returns true if any new data gets acked,
   // returns false otherwise.
   virtual bool OnFrameAcked(const QuicFrame& frame,
-                            QuicTime::Delta ack_delay_time) = 0;
+                            QuicTime::Delta ack_delay_time,
+                            QuicTime receive_timestamp) = 0;
 
   // Called when |frame| is retransmitted.
   virtual void OnStreamFrameRetransmitted(const QuicStreamFrame& frame) = 0;