Call QuicSentPacketManager's OnPacketSerialized or OnRetransmittedPacket

net/quic/quic_unacked_packet_map_test.cc

Index: net/quic/quic_unacked_packet_map_test.cc
diff --git a/net/quic/quic_unacked_packet_map_test.cc b/net/quic/quic_unacked_packet_map_test.cc
index 1b084c13d435b9dd26f4b0c0b4f3299f76e8c659..0d40f4afee657b38c4eee6d4909fe078eeac28d8 100644
--- a/net/quic/quic_unacked_packet_map_test.cc
+++ b/net/quic/quic_unacked_packet_map_test.cc
@@ -287,6 +287,26 @@ TEST_F(QuicUnackedPacketMapTest, RestoreInflight) {
   EXPECT_EQ(2 * kDefaultLength, unacked_packets_.bytes_in_flight());
 }
 
+TEST_F(QuicUnackedPacketMapTest, SendWithGap) {
+  // Simulate a retransmittable packet being sent, retransmitted, and the first
+  // transmission being acked.
+  unacked_packets_.AddPacket(CreateRetransmittablePacket(1));
+  unacked_packets_.SetSent(1, now_, kDefaultLength, true);
+  unacked_packets_.AddPacket(CreateRetransmittablePacket(3));
+  unacked_packets_.SetSent(3, now_, kDefaultLength, true);
+  unacked_packets_.OnRetransmittedPacket(1, 5, LOSS_RETRANSMISSION);
+  unacked_packets_.SetSent(5, now_, kDefaultLength, true);
+
+  EXPECT_EQ(1u, unacked_packets_.GetLeastUnacked());
+  EXPECT_TRUE(unacked_packets_.IsUnacked(1));
+  EXPECT_FALSE(unacked_packets_.IsUnacked(2));
+  EXPECT_TRUE(unacked_packets_.IsUnacked(3));
+  EXPECT_FALSE(unacked_packets_.IsUnacked(4));
+  EXPECT_TRUE(unacked_packets_.IsUnacked(5));
+  EXPECT_EQ(5u, unacked_packets_.largest_sent_packet());
+}
+
+
 }  // namespace
 }  // namespace test
 }  // namespace net