Add a mechanism to disable IPv6....

net/net.gyp

 # Copyright (c) 2009 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': [
     {
       'target_name': 'net',
       'type': '<(library)',
       'dependencies': [
         '../base/base.gyp:base',
         '../base/base.gyp:base_i18n',
         '../build/temp_gyp/googleurl.gyp:googleurl',
         '../sdch/sdch.gyp:sdch',
         '../third_party/bzip2/bzip2.gyp:bzip2',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
         '../third_party/modp_b64/modp_b64.gyp:modp_b64',
         '../third_party/zlib/zlib.gyp:zlib',
         'net_resources',
       ],
       'msvs_guid': '326E9795-E760-410A-B69A-3F79DB3F5243',
       'sources': [
+        'base/address_family.h',
         'base/address_list.cc',
         'base/address_list.h',
         'base/auth.h',
         'base/base64.cc',
         'base/base64.h',
         'base/bzip2_filter.cc',
         'base/bzip2_filter.h',
         'base/cache_type.h',
         'base/cert_status_flags.cc',
         'base/cert_status_flags.h',
@@ skipping 731 matching lines @@
       ],
     }],
   ],
 }
 
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