Remove a test-only SerializedPacket constructor from QUIC.

net/quic/quic_protocol.h

Index: net/quic/quic_protocol.h
diff --git a/net/quic/quic_protocol.h b/net/quic/quic_protocol.h
index 7c4a45a3cdb1301b71ab664856a5aa59d54d9abd..06008ab7f3b3a813d6bca3c20b75ba0c622e54fa 100644
--- a/net/quic/quic_protocol.h
+++ b/net/quic/quic_protocol.h
@@ -1298,19 +1298,6 @@ struct NET_EXPORT_PRIVATE SerializedPacket {
                    QuicFrames* retransmittable_frames,
                    bool has_ack,
                    bool has_stop_waiting);
-  SerializedPacket(QuicPathId path_id,
-                   QuicPacketNumber packet_number,
-                   QuicPacketNumberLength packet_number_length,
-                   char* encrypted_buffer,
-                   size_t encrypted_length,
-                   bool owns_buffer,
-                   QuicPacketEntropyHash entropy_hash,
-                   QuicFrames* retransmittable_frames,
-                   bool needs_padding,
-                   IsHandshake is_handshake,
-                   bool has_ack,
-                   bool has_stop_waiting,
-                   EncryptionLevel level);
   ~SerializedPacket();
 
   QuicEncryptedPacket* packet;