Always build nss_decryptor.cc on Windows and Mac.

chrome/chrome_utility.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': {
     'chrome_utility_sources': [
       'utility/chrome_content_utility_client.cc',
       'utility/chrome_content_utility_client.h',
       'utility/chrome_content_utility_ipc_whitelist.cc',
@@ skipping 101 matching lines @@
         'common',
       ],
       'include_dirs': [
         '..',
         '<(grit_out_dir)',
       ],
       'sources': [
         '<@(chrome_utility_sources)',
       ],
       'conditions': [
-        ['use_openssl==1', {
+        ['OS!="win" and OS!="mac" and use_openssl==1', {
           'sources!': [
             'utility/importer/nss_decryptor.cc',
           ]
         }],
         ['OS!="win" and OS!="mac" and use_openssl==0', {
           'dependencies': [
             '../crypto/crypto.gyp:crypto',
           ],
           'sources': [
             'utility/importer/nss_decryptor_system_nss.cc',
@@ skipping 51 matching lines @@
         }],
         ['safe_browsing==1', {
           'defines': [ 'FULL_SAFE_BROWSING' ],
         }],
       ],
       # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267, ],
     },
   ],
 }