Add native file picker impl using SelectFileDialog.

chrome/chrome_tests.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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 2958 matching lines @@
         'browser/google_apis/gdata_test_util.h',
         'browser/history/history_browsertest.cc',
         'browser/history/history_extension_apitest.cc',
         'browser/history/multipart_browsertest.cc',
         'browser/history/redirect_browsertest.cc',
         'browser/history/top_sites_extension_test.cc',
         'browser/iframe_browsertest.cc',
         'browser/infobars/infobars_browsertest.cc',
         'browser/infobars/infobar_extension_apitest.cc',
         'browser/importer/toolbar_importer_utils_browsertest.cc',
+        'browser/intents/native_services_browsertest.cc',
         'browser/loadtimes_extension_bindings_browsertest.cc',
         'browser/locale_tests_browsertest.cc',
         'browser/logging_chrome_browsertest.cc',
         'browser/metrics/metrics_service_browsertest.cc',
         'browser/net/cookie_policy_browsertest.cc',
         'browser/net/ftp_browsertest.cc',
         'browser/net/load_timing_observer_browsertest.cc',
         'browser/net/proxy_browsertest.cc',
         'browser/notifications/desktop_notifications_unittest.cc',
         'browser/notifications/desktop_notifications_unittest.h',
@@ skipping 1878 matching lines @@
                 '--result', '<@(_outputs)',
                 '--isolate', 'browser_tests.isolate',
               ],
             },
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }