Add split tunnel interface to vpnProvider

extensions/extensions_tests.gyp

 {
   'includes': [
     'extensions_tests.gypi',
   ],
   'variables': {
     # Product name is used for Mac bundle.
     'app_shell_product_name': 'App Shell',
     # The version is high enough to be supported by Omaha (at least 31)
     # but fake enough to be obviously not a Chrome release.
     'app_shell_version': '38.1234.5678.9',
@@ skipping 78 matching lines @@
         ['OS=="win" and win_use_allocator_shim==1', {
           'dependencies': [
             '<(DEPTH)/base/allocator/allocator.gyp:allocator',
           ],
         }],
         ['OS=="mac"', {
           'dependencies': [
             'shell/app_shell.gyp:app_shell',  # Needed for App Shell.app's Helper.
           ],
         }],
+        ['chromeos==1', {
+          'sources': [
+            '<@(extensions_browsertests_sources_chromeos)',
+          ],
+        }],
         # This is only here to keep gyp happy. This target never builds on
         # mobile platforms.
         ['OS != "ios" and OS != "android"', {
           'dependencies': [
             '<(DEPTH)/components/components.gyp:storage_monitor_test_support',
           ],
         }],
       ]
     },
   ],
@@ skipping 10 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'extensions_browsertests.isolate',
           ],
         },
       ],
     }],
   ],
 }