Simplify PRTimeToBaseTime implementation, add BaseTimeToPRTime.

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 191 matching lines @@
       'target_name': 'crypto_unittests',
       'type': 'executable',
       'sources': [
         # Infrastructure files.
         'run_all_unittests.cc',
 
         # Tests.
         'ec_private_key_unittest.cc',
         'encryptor_unittest.cc',
         'hmac_unittest.cc',
+        'nss_util_unittest.cc',
         'p224_unittest.cc',
         'p224_spake_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',
@@ skipping 24 matching lines @@
             'openpgp_symmetric_encryption_unittest.cc',
           ]
         }],
         [ 'OS == "mac" or OS == "win"', {
           'dependencies': [
             '../third_party/nss/nss.gyp:nss',
           ],
         }],
         [ 'use_openssl==1', {
           'sources!': [
+            'nss_util_unittest.cc',
             'openpgp_symmetric_encryption_unittest.cc',
             'rsa_private_key_nss_unittest.cc',
           ],
         }],
       ],
     },
   ],
 }