[Chromecast] Ignore interfaces not used to connect to internet.

chromecast/chromecast.gyp

 # 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': {
     'android_support_v13_target%':
         '../third_party/android_tools/android_tools.gyp:android_support_v13_javalib',
     'cast_build_release': 'internal/build/cast_build_release',
     'cast_is_debug_build%': 0,
@@ skipping 82 matching lines @@
           ],
         }],
       ]
     },  # end of target 'cast_crash_client'
     {
       'target_name': 'cast_net',
       'type': '<(component)',
       'sources': [
         'net/connectivity_checker.cc',
         'net/connectivity_checker.h',
+        'net/network_change_notifier_factory_cast.cc',
+        'net/network_change_notifier_factory_cast.h',
         'net/net_switches.cc',
         'net/net_switches.h',
+        'net/net_util_cast.cc',
+        'net/net_util_cast.h',
       ],
     },
     {
       'target_name': 'cast_shell_resources',
       'type': 'none',
       'variables': {
         'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chromecast',
       },
       'actions': [
         {
@@ skipping 515 matching lines @@
           'sources': [
             'graphics/cast_egl_platform_default.cc',
             'graphics/graphics_properties_default.cc',
             'graphics/osd_plane_default.cc'
           ],
         }
       ]
     }],
   ],  # end of conditions
 }