Remove base/network_change_notifier_linux_unittest.cc exclusion.

net/net.gyp

 # Copyright 2013 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,
 
     'linux_link_kerberos%': 0,
     'use_tracing_cache_backend%': 0,
@@ skipping 551 matching lines @@
             'epoll_server',
             'flip_in_mem_edsm_server_base',
             'quic_base',
           ],
           'sources': [
             '<@(net_linux_test_sources)',
           ],
         }],
         ['chromeos==1', {
           'sources!': [
-            'base/network_change_notifier_linux_unittest.cc',
             'proxy/proxy_config_service_linux_unittest.cc',
           ],
         }],
         [ 'OS == "android"', {
           'sources!': [
             # See bug http://crbug.com/344533.
             'disk_cache/blockfile/index_table_v3_unittest.cc',
             # No res_ninit() et al on Android, so this doesn't make a lot of
             # sense.
             'dns/dns_config_service_posix_unittest.cc',
@@ skipping 1121 matching lines @@
             'net_unittests.isolate',
           ],
           'sources': [
             'net_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }