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

net/quic/quic_framer.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_FRAMER_H_
 #define NET_QUIC_QUIC_FRAMER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 289 matching lines @@
                                QuicDecrypter* decrypter,
                                bool latch_once_used);
 
   const QuicDecrypter* decrypter() const;
   const QuicDecrypter* alternative_decrypter() const;
 
   // Changes the encrypter used for level |level| to |encrypter|. The function
   // takes ownership of |encrypter|.
   void SetEncrypter(EncryptionLevel level, QuicEncrypter* encrypter);
 
+  // Encrypts a payload in |buffer|.  |ad_len| is the length of the associated
+  // data. |total_len| is the length of the associated data plus plaintext.
+  // |buffer_len| is the full length of the allocated buffer.
+  size_t EncryptInPlace(EncryptionLevel level,
+                        QuicPathId path_id,
+                        QuicPacketNumber packet_number,
+                        size_t ad_len,
+                        size_t total_len,
+                        size_t buffer_len,
+                        char* buffer);
+
   // Returns the length of the data encrypted into |buffer| if |buffer_len| is
   // long enough, and otherwise 0.
   size_t EncryptPayload(EncryptionLevel level,
                         QuicPathId path_id,
                         QuicPacketNumber packet_number,
                         const QuicPacket& packet,
                         char* buffer,
                         size_t buffer_len);
 
   // Returns the maximum length of plaintext that can be encrypted
@@ skipping 223 matching lines @@
   // The time delta computed for the last timestamp frame. This is relative to
   // the creation_time.
   QuicTime::Delta last_timestamp_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicFramer);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_FRAMER_H_