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

net/quic/crypto/aes_128_gcm_12_encrypter.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_AES_128_GCM_12_ENCRYPTER_H_
-#define NET_QUIC_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_
-
-#include <stddef.h>
-
-#include "base/macros.h"
-#include "net/quic/crypto/aead_base_encrypter.h"
-
-namespace net {
-
-// An Aes128Gcm12Encrypter is a QuicEncrypter that implements the
-// AEAD_AES_128_GCM_12 algorithm specified in RFC 5282. Create an instance by
-// calling QuicEncrypter::Create(kAESG).
-//
-// It uses an authentication tag of 12 bytes (96 bits). The fixed prefix
-// of the nonce is four bytes.
-class NET_EXPORT_PRIVATE Aes128Gcm12Encrypter : public AeadBaseEncrypter {
- public:
-  enum {
-    // Authentication tags are truncated to 96 bits.
-    kAuthTagSize = 12,
-  };
-
-  Aes128Gcm12Encrypter();
-  ~Aes128Gcm12Encrypter() override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(Aes128Gcm12Encrypter);
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_