Removing NSS files and USE_OPENSSL flag

crypto/crypto.gypi

 # 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.
 
 {
   'variables': {
     # Put all transitive dependencies for Windows HMAC here.
     # This is required so that we can build them for nacl win64.
     'variables': {
       'hmac_win64_related_sources': [
         'hmac.cc',
         'hmac.h',
         'hmac_win.cc',
         'secure_util.cc',
         'secure_util.h',
         'symmetric_key.h',
         'symmetric_key_win.cc',
-        'third_party/nss/chromium-blapi.h',
-        'third_party/nss/chromium-blapit.h',
         'third_party/nss/chromium-prtypes.h',
         'third_party/nss/chromium-sha256.h',
         'third_party/nss/sha512.cc',
         'wincrypt_shim.h',
       ],
     },
     'crypto_sources': [
       # NOTE: all transitive dependencies of HMAC on windows need
       #     to be placed in the source list above.
       '<@(hmac_win64_related_sources)',
       'aead_openssl.cc',
       'aead_openssl.h',
       'apple_keychain.h',
       'apple_keychain_ios.mm',
       'apple_keychain_mac.mm',
       'auto_cbb.h',
       'capi_util.cc',
       'capi_util.h',
       'crypto_export.h',
       'cssm_init.cc',
       'cssm_init.h',
-      'curve25519-donna.c',
       'curve25519.h',
-      'curve25519_nss.cc',
       'curve25519_openssl.cc',
       'ec_private_key.h',
-      'ec_private_key_nss.cc',
       'ec_private_key_openssl.cc',
       'ec_signature_creator.cc',
       'ec_signature_creator.h',
       'ec_signature_creator_impl.h',
-      'ec_signature_creator_nss.cc',
       'ec_signature_creator_openssl.cc',
       'encryptor.cc',
       'encryptor.h',
-      'encryptor_nss.cc',
       'encryptor_openssl.cc',
       'hkdf.cc',
       'hkdf.h',
-      'hmac_nss.cc',
       'hmac_openssl.cc',
       'mac_security_services_lock.cc',
       'mac_security_services_lock.h',
       'mock_apple_keychain.cc',
       'mock_apple_keychain.h',
       'mock_apple_keychain_ios.cc',
       'mock_apple_keychain_mac.cc',
       'p224_spake.cc',
       'p224_spake.h',
       'nss_crypto_module_delegate.h',
       'nss_key_util.cc',
       'nss_key_util.h',
       'nss_util.cc',
       'nss_util.h',
       'nss_util_internal.h',
       'openssl_bio_string.cc',
       'openssl_bio_string.h',
       'openssl_util.cc',
       'openssl_util.h',
       'p224.cc',
       'p224.h',
       'random.h',
       'random.cc',
       'rsa_private_key.h',
-      'rsa_private_key_nss.cc',
       'rsa_private_key_openssl.cc',
       'scoped_capi_types.h',
       'scoped_nss_types.h',
       'secure_hash.h',
-      'secure_hash_default.cc',
       'secure_hash_openssl.cc',
       'sha2.cc',
       'sha2.h',
       'signature_creator.h',
-      'signature_creator_nss.cc',
       'signature_creator_openssl.cc',
       'signature_verifier.h',
-      'signature_verifier_nss.cc',
       'signature_verifier_openssl.cc',
-      'symmetric_key_nss.cc',
       'symmetric_key_openssl.cc',
-      'third_party/nss/chromium-nss.h',
-      'third_party/nss/pk11akey.cc',
-      'third_party/nss/rsawrapr.c',
-      'third_party/nss/secsign.cc',
     ],
     'nacl_win64_sources': [
       '<@(hmac_win64_related_sources)',
       'random.cc',
       'random.h',
     ],
   }
 }