gfe-relnote: In QUIC, notify frame acked when discarding initial key. Protected by gfe2_reloadable_flag_quic_neuter_unencrypted_control_frames.

This is enabled when using TLS handshake.

PiperOrigin-RevId: 293194952
Change-Id: I5850ee7b56351b494465ba639c481996239ff3df
diff --git a/quic/core/quic_sent_packet_manager_test.cc b/quic/core/quic_sent_packet_manager_test.cc
index c677afa..6b34482 100644
--- a/quic/core/quic_sent_packet_manager_test.cc
+++ b/quic/core/quic_sent_packet_manager_test.cc
@@ -3410,6 +3410,23 @@
             manager_.GetRetransmissionTime());
 }
 
+// Regresstion test for b/148841700.
+TEST_F(QuicSentPacketManagerTest, NeuterUnencryptedPackets) {
+  SendCryptoPacket(1);
+  SendPingPacket(2, ENCRYPTION_INITIAL);
+  // Crypto data has been discarded but ping does not.
+  if (GetQuicReloadableFlag(quic_neuter_unencrypted_control_frames)) {
+    EXPECT_CALL(notifier_, OnFrameAcked(_, _, _))
+        .Times(2)
+        .WillOnce(Return(false))
+        .WillOnce(Return(true));
+  } else {
+    EXPECT_CALL(notifier_, OnFrameAcked(_, _, _)).Times(0);
+  }
+  EXPECT_CALL(notifier_, IsFrameOutstanding(_)).WillRepeatedly(Return(false));
+  manager_.NeuterUnencryptedPackets();
+}
+
 }  // namespace
 }  // namespace test
 }  // namespace quic