relnote: remove insecure QUIC support

net/quic/quic_connection.h

Index: net/quic/quic_connection.h
diff --git a/net/quic/quic_connection.h b/net/quic/quic_connection.h
index a85508fdb3ee8d6b5ed9b2124e17208fa5ba0dd8..64c1f66fc67f5f57efb7a689760f22649267c7e0 100644
--- a/net/quic/quic_connection.h
+++ b/net/quic/quic_connection.h
@@ -294,7 +294,6 @@ class NET_EXPORT_PRIVATE QuicConnection
                  const PacketWriterFactory& writer_factory,
                  bool owns_writer,
                  Perspective perspective,
-                 bool is_secure,
                  const QuicVersionVector& supported_versions);
   ~QuicConnection() override;
 
@@ -611,8 +610,6 @@ class NET_EXPORT_PRIVATE QuicConnection
   QuicPacketWriter* writer() { return writer_; }
   const QuicPacketWriter* writer() const { return writer_; }
 
-  bool is_secure() const { return is_secure_; }
-
   // Sends an MTU discovery packet of size |target_mtu|.  If the packet is
   // acknowledged by the peer, the maximum packet size will be increased to
   // |target_mtu|.
@@ -948,9 +945,6 @@ class NET_EXPORT_PRIVATE QuicConnection
   // version negotiation packet.
   QuicVersionVector server_supported_versions_;
 
-  // True if this is a secure QUIC connection.
-  bool is_secure_;
-
   // The size of the packet we are targeting while doing path MTU discovery.
   QuicByteCount mtu_discovery_target_;