Remove is_fec_packet from TransmissionInfo and SerializedPacket. No functional change.

net/quic/quic_connection.cc

Index: net/quic/quic_connection.cc
diff --git a/net/quic/quic_connection.cc b/net/quic/quic_connection.cc
index 1fd4e37258ef2854d887d88a050fa1576edbfe18..1f34421f9ebb880966624f70bddb5aa5d43b1a18 100644
--- a/net/quic/quic_connection.cc
+++ b/net/quic/quic_connection.cc
@@ -1552,11 +1552,9 @@ bool QuicConnection::WritePacket(SerializedPacket* packet) {
   DCHECK_LE(encrypted_length, kMaxPacketSize);
   DCHECK_LE(encrypted_length, packet_generator_.GetCurrentMaxPacketLength());
   DVLOG(1) << ENDPOINT << "Sending packet " << packet_number << " : "
-           << (packet->is_fec_packet
-                   ? "FEC "
-                   : (IsRetransmittable(*packet) == HAS_RETRANSMITTABLE_DATA
-                          ? "data bearing "
-                          : " ack only "))
+           << (IsRetransmittable(*packet) == HAS_RETRANSMITTABLE_DATA
+                   ? "data bearing "
+                   : " ack only ")
            << ", encryption level: "
            << QuicUtils::EncryptionLevelToString(packet->encryption_level)
            << ", encrypted length:" << encrypted_length;