Move shared files in net/quic/ into net/quic/core/

net/quic/crypto/cert_compressor.h

-// Copyright (c) 2013 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_CRYPTO_CERT_COMPRESSOR_H_
-#define NET_QUIC_CRYPTO_CERT_COMPRESSOR_H_
-
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/strings/string_piece.h"
-#include "net/base/net_export.h"
-#include "net/quic/crypto/common_cert_set.h"
-#include "net/quic/crypto/crypto_protocol.h"
-
-namespace net {
-
-// CertCompressor provides functions for compressing and decompressing
-// certificate chains using three techniquies:
-//   1) The peer may provide a list of a 64-bit, FNV-1a hashes of certificates
-//      that they already have. In the event that one of them is to be
-//      compressed, it can be replaced with just the hash.
-//   2) The peer may provide a number of hashes that represent sets of
-//      pre-shared certificates (CommonCertSets). If one of those certificates
-//      is to be compressed, and it's known to the given CommonCertSets, then it
-//      can be replaced with a set hash and certificate index.
-//   3) Otherwise the certificates are compressed with zlib using a pre-shared
-//      dictionary that consists of the certificates handled with the above
-//      methods and a small chunk of common substrings.
-class NET_EXPORT_PRIVATE CertCompressor {
- public:
-  // CompressChain compresses the certificates in |certs| and returns a
-  // compressed representation. |common_sets| contains the common certificate
-  // sets known locally and |client_common_set_hashes| contains the hashes of
-  // the common sets known to the peer. |client_cached_cert_hashes| contains
-  // 64-bit, FNV-1a hashes of certificates that the peer already possesses.
-  static std::string CompressChain(const std::vector<std::string>& certs,
-                                   base::StringPiece client_common_set_hashes,
-                                   base::StringPiece client_cached_cert_hashes,
-                                   const CommonCertSets* common_sets);
-
-  // DecompressChain decompresses the result of |CompressChain|, given in |in|,
-  // into a series of certificates that are written to |out_certs|.
-  // |cached_certs| contains certificates that the peer may have omitted and
-  // |common_sets| contains the common certificate sets known locally.
-  static bool DecompressChain(base::StringPiece in,
-                              const std::vector<std::string>& cached_certs,
-                              const CommonCertSets* common_sets,
-                              std::vector<std::string>* out_certs);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(CertCompressor);
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_CRYPTO_CERT_COMPRESSOR_H_