crypto: add simple P224 implementation.

crypto/crypto.gyp

 # Copyright (c) 2011 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': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 120 matching lines @@
         'hmac_win.cc',
         'mac_security_services_lock.cc',
         'mac_security_services_lock.h',
         'nss_util.cc',
         'nss_util.h',
         'nss_util_internal.h',
         'openpgp_symmetric_encryption.cc',
         'openpgp_symmetric_encryption.h',
         'openssl_util.cc',
         'openssl_util.h',
+        'p224.cc',
+        'p224.h',
         'rsa_private_key.cc',
         'rsa_private_key.h',
         'rsa_private_key_mac.cc',
         'rsa_private_key_nss.cc',
         'rsa_private_key_openssl.cc',
         'rsa_private_key_win.cc',
         'scoped_capi_types.h',
         'scoped_nss_types.h',
         'secure_hash.h',
         'secure_hash_default.cc',
@@ skipping 26 matching lines @@
     {
       'target_name': 'crypto_unittests',
       'type': 'executable',
       'sources': [
         # Infrastructure files.
         'run_all_unittests.cc',
 
         # Tests.
         'encryptor_unittest.cc',
         'hmac_unittest.cc',
+        'p224_unittest.cc',
         'rsa_private_key_unittest.cc',
         'rsa_private_key_nss_unittest.cc',
         'secure_hash_unittest.cc',
         'sha2_unittest.cc',
         'signature_creator_unittest.cc',
         'signature_verifier_unittest.cc',
         'symmetric_key_unittest.cc',
         'openpgp_symmetric_encryption_unittest.cc',
       ],
       'dependencies': [
@@ skipping 30 matching lines @@
         [ 'use_openssl==1', {
           'sources!': [
             'openpgp_symmetric_encryption_unittest.cc',
             'rsa_private_key_nss_unittest.cc',
           ],
         }],
       ],
     },
   ],
 }