Simplify QUIC's encryption path now that FEC is gone. Protected by FLAG_quic_inplace_encryption.

net/quic/quic_protocol.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_QUIC_PROTOCOL_H_
 #define NET_QUIC_QUIC_PROTOCOL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 402 matching lines @@
 NET_EXPORT_PRIVATE size_t GetPacketHeaderSize(const QuicPacketHeader& header);
 
 NET_EXPORT_PRIVATE size_t
 GetPacketHeaderSize(QuicConnectionIdLength connection_id_length,
                     bool include_version,
                     bool include_path_id,
                     QuicPacketNumberLength packet_number_length);
 
 // Index of the first byte in a QUIC packet of encrypted data.
 NET_EXPORT_PRIVATE size_t
+GetStartOfEncryptedData(const QuicPacketHeader& header);
+
+NET_EXPORT_PRIVATE size_t
 GetStartOfEncryptedData(QuicConnectionIdLength connection_id_length,
                         bool include_version,
                         bool include_path_id,
                         QuicPacketNumberLength packet_number_length);
 
 enum QuicRstStreamErrorCode {
   // Complete response has been sent, sending a RST to ask the other endpoint
   // to stop sending request data without discarding the response.
   QUIC_STREAM_NO_ERROR = 0,
 
@@ skipping 953 matching lines @@
       : iov(iov), iov_count(iov_count), total_length(total_length) {}
 
   const struct iovec* iov;
   const int iov_count;
   const size_t total_length;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_