This adds the onNetworkChanged event to networkingPrivate

chrome/chrome_browser_chromeos.gypi

 # Copyright (c) 2012 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.
 
 {
   'targets': [
     {
       'target_name': 'browser_chromeos',
       'type': 'static_library',
@@ skipping 661 matching lines @@
             'browser/chromeos/extensions/file_browser_private_api.cc',
             'browser/chromeos/extensions/file_browser_private_api.h',
             'browser/chromeos/extensions/file_browser_private_api_factory.cc',
             'browser/chromeos/extensions/file_browser_private_api_factory.h',
             'browser/chromeos/extensions/input_method_api.cc',
             'browser/chromeos/extensions/input_method_api.h',
             'browser/chromeos/extensions/media_player_api.cc',
             'browser/chromeos/extensions/media_player_api.h',
             'browser/chromeos/extensions/networking_private_api.cc',
             'browser/chromeos/extensions/networking_private_api.h',
+            'browser/chromeos/extensions/networking_private_event_router.cc',
+            'browser/chromeos/extensions/networking_private_event_router.h',
+            'browser/chromeos/extensions/networking_private_event_router_factory.cc',
+            'browser/chromeos/extensions/networking_private_event_router_factory.h',
             'browser/chromeos/extensions/wallpaper_manager_util.cc',
             'browser/chromeos/extensions/wallpaper_manager_util.h',
             'browser/chromeos/extensions/wallpaper_private_api.cc',
             'browser/chromeos/extensions/wallpaper_private_api.h',
             'browser/chromeos/extensions/zip_file_creator.cc',
             'browser/chromeos/extensions/zip_file_creator.h',
           ],
         }],
         ['use_cras==1', {
           'cflags': [
@@ skipping 91 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/chromeos/drive/drive.proto' ],
       'variables': {
         'proto_in_dir': 'browser/chromeos/drive',
         'proto_out_dir': 'chrome/browser/chromeos/drive',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }