Remove a test-only SerializedPacket constructor from QUIC.

net/quic/quic_connection_test.cc

Index: net/quic/quic_connection_test.cc
diff --git a/net/quic/quic_connection_test.cc b/net/quic/quic_connection_test.cc
index 2e99e4dca2f90b14045b9ff81253ad01675b19b7..2b68fb4f78750ccaad5e2d7820449aa1841de189 100644
--- a/net/quic/quic_connection_test.cc
+++ b/net/quic/quic_connection_test.cc
@@ -468,9 +468,9 @@ class TestConnection : public QuicConnection {
             kMaxPacketSize);
     delete packet;
     SerializedPacket serialized_packet(
-        kDefaultPathId, packet_number, PACKET_6BYTE_PACKET_NUMBER, buffer,
-        encrypted_length, false, entropy_hash, retransmittable_frames, false,
-        NOT_HANDSHAKE, has_ack, has_pending_frames, ENCRYPTION_NONE);
+        kDefaultPathId, packet_number, PACKET_6BYTE_PACKET_NUMBER,
+        new QuicEncryptedPacket(buffer, encrypted_length, false), entropy_hash,
+        retransmittable_frames, has_ack, has_pending_frames);
     OnSerializedPacket(&serialized_packet);
   }