Removing NSS files and USE_OPENSSL flag

components/gcm_driver/crypto/gcm_message_cryptographer_nss.cc

Index: components/gcm_driver/crypto/gcm_message_cryptographer_nss.cc
diff --git a/components/gcm_driver/crypto/gcm_message_cryptographer_nss.cc b/components/gcm_driver/crypto/gcm_message_cryptographer_nss.cc
deleted file mode 100644
index accf45644e67614d75e42b182d540022e2fef8c3..0000000000000000000000000000000000000000
--- a/components/gcm_driver/crypto/gcm_message_cryptographer_nss.cc
+++ /dev/null
@@ -1,94 +0,0 @@
-// Copyright 2015 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 "components/gcm_driver/crypto/gcm_message_cryptographer.h"
-
-#include <pk11pub.h>
-#include <secerr.h>
-#include <stddef.h>
-
-#include "base/logging.h"
-#include "base/numerics/safe_math.h"
-#include "base/strings/string_util.h"
-#include "crypto/scoped_nss_types.h"
-
-namespace gcm {
-
-bool GCMMessageCryptographer::EncryptDecryptRecordInternal(
-    Mode mode,
-    const base::StringPiece& input,
-    const base::StringPiece& key,
-    const base::StringPiece& nonce,
-    std::string* output) const {
-  DCHECK(output);
-
-  SECItem key_item;
-  key_item.type = siBuffer;
-  key_item.data = const_cast<unsigned char*>(
-      reinterpret_cast<const unsigned char*>(key.data()));
-  key_item.len = key.size();
-
-  const CK_ATTRIBUTE_TYPE cka_mode = mode == ENCRYPT ? CKA_ENCRYPT
-                                                     : CKA_DECRYPT;
-
-  crypto::ScopedPK11Slot slot(PK11_GetInternalSlot());
-  crypto::ScopedPK11SymKey aead_key(
-      PK11_ImportSymKey(slot.get(), CKM_AES_GCM, PK11_OriginUnwrap, cka_mode,
-                        &key_item, nullptr));
-
-  CK_GCM_PARAMS gcm_params;
-  gcm_params.pIv = const_cast<unsigned char*>(
-      reinterpret_cast<const unsigned char*>(nonce.data()));
-  gcm_params.ulIvLen = nonce.size();
-
-  gcm_params.pAAD = nullptr;
-  gcm_params.ulAADLen = 0;
-
-  gcm_params.ulTagBits = kAuthenticationTagBytes * 8;
-
-  SECItem param;
-  param.type = siBuffer;
-  param.data = reinterpret_cast<unsigned char*>(&gcm_params);
-  param.len = sizeof(gcm_params);
-
-  base::CheckedNumeric<size_t> maximum_output_length(input.size());
-  if (mode == ENCRYPT)
-    maximum_output_length += kAuthenticationTagBytes;
-
-  // WriteInto requires the buffer to finish with a NULL-byte.
-  maximum_output_length += 1;
-
-  unsigned int output_length = 0;
-  unsigned char* raw_input = const_cast<unsigned char*>(
-      reinterpret_cast<const unsigned char*>(input.data()));
-  unsigned char* raw_output = reinterpret_cast<unsigned char*>(
-      base::WriteInto(output, maximum_output_length.ValueOrDie()));
-
-  if (mode == ENCRYPT) {
-    if (PK11_Encrypt(aead_key.get(), CKM_AES_GCM, &param, raw_output,
-                     &output_length, output->size(), raw_input,
-                     input.size()) != SECSuccess) {
-      return false;
-    }
-  } else {
-    if (PK11_Decrypt(aead_key.get(), CKM_AES_GCM, &param, raw_output,
-                     &output_length, output->size(), raw_input,
-                     input.size()) != SECSuccess) {
-      return false;
-    }
-  }
-
-  base::CheckedNumeric<size_t> expected_output_length(input.size());
-  if (mode == ENCRYPT)
-    expected_output_length += kAuthenticationTagBytes;
-  else
-    expected_output_length -= kAuthenticationTagBytes;
-
-  DCHECK_EQ(expected_output_length.ValueOrDie(), output_length);
-
-  output->resize(output_length);
-  return true;
-}
-
-}  // namespace gcm