Removing NSS files and USE_OPENSSL flag

net/quic/crypto/chacha20_poly1305_rfc7539_encrypter_nss.cc

-// Copyright 2014 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/chacha20_poly1305_rfc7539_encrypter.h"
-
-#include <pk11pub.h>
-
-using base::StringPiece;
-
-namespace net {
-
-namespace {
-
-const size_t kKeySize = 32;
-const size_t kNoncePrefixSize = 4;
-
-}  // namespace
-
-ChaCha20Poly1305Rfc7539Encrypter::ChaCha20Poly1305Rfc7539Encrypter()
-    : AeadBaseEncrypter(CKM_NSS_CHACHA20_POLY1305,
-                        kKeySize,
-                        kAuthTagSize,
-                        kNoncePrefixSize) {
-  static_assert(kKeySize <= kMaxKeySize, "key size too big");
-  static_assert(kNoncePrefixSize <= kMaxNoncePrefixSize,
-                "nonce prefix size too big");
-}
-
-ChaCha20Poly1305Rfc7539Encrypter::~ChaCha20Poly1305Rfc7539Encrypter() {}
-
-bool ChaCha20Poly1305Rfc7539Encrypter::IsSupported() {
-  return false;
-}
-
-void ChaCha20Poly1305Rfc7539Encrypter::FillAeadParams(
-    StringPiece nonce,
-    StringPiece associated_data,
-    size_t auth_tag_size,
-    AeadParams* aead_params) const {}
-
-}  // namespace net