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

net/quic/crypto/quic_encrypter.cc

-// 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.
-
-#include "net/quic/crypto/quic_encrypter.h"
-
-#include "net/quic/crypto/aes_128_gcm_12_encrypter.h"
-#include "net/quic/crypto/chacha20_poly1305_encrypter.h"
-#include "net/quic/crypto/crypto_protocol.h"
-#include "net/quic/crypto/null_encrypter.h"
-
-namespace net {
-
-// static
-QuicEncrypter* QuicEncrypter::Create(QuicTag algorithm) {
-  switch (algorithm) {
-    case kAESG:
-      return new Aes128Gcm12Encrypter();
-    case kCC20:
-      return new ChaCha20Poly1305Encrypter();
-    case kNULL:
-      return new NullEncrypter();
-    default:
-      LOG(FATAL) << "Unsupported algorithm: " << algorithm;
-      return nullptr;
-  }
-}
-
-}  // namespace net