Add browser tests for enabling Google Drive offline mode on first run.

chrome/chrome_tests.gypi

 # Copyright 2013 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' : {
     'chromedriver_unittest_sources': [
       'test/chromedriver/capabilities_unittest.cc',
       'test/chromedriver/chrome/chrome_finder_unittest.cc',
       'test/chromedriver/chrome/console_logger_unittest.cc',
       'test/chromedriver/chrome/device_manager_unittest.cc',
@@ skipping 1007 matching lines @@
         'browser/chromeos/extensions/info_private_apitest.cc',
         'browser/chromeos/extensions/input_method_apitest_chromeos.cc',
         'browser/chromeos/extensions/virtual_keyboard_browsertest.cc',
         'browser/chromeos/extensions/wallpaper_private_apitest.cc',
         'browser/chromeos/file_manager/desktop_notifications_browsertest.cc',
         'browser/chromeos/file_manager/drive_test_util.cc',
         'browser/chromeos/file_manager/drive_test_util.h',
         'browser/chromeos/file_manager/external_filesystem_apitest.cc',
         'browser/chromeos/file_manager/file_manager_browsertest.cc',
         'browser/chromeos/file_manager/file_manager_jstest.cc',
+        'browser/chromeos/first_run/drive_first_run_browsertest.cc',
         'browser/chromeos/input_method/input_method_engine_ibus_browserttests.cc',
         'browser/chromeos/kiosk_mode/mock_kiosk_mode_settings.cc',
         'browser/chromeos/kiosk_mode/mock_kiosk_mode_settings.h',
         'browser/chromeos/login/crash_restore_browsertest.cc',
         'browser/chromeos/login/enrollment/enrollment_screen_browsertest.cc',
         'browser/chromeos/login/enrollment/mock_enrollment_screen.cc',
         'browser/chromeos/login/enrollment/mock_enrollment_screen.h',
         'browser/chromeos/login/existing_user_controller_browsertest.cc',
         'browser/chromeos/login/kiosk_browsertest.cc',
         'browser/chromeos/login/login_screen_policy_browsertest.cc',
@@ skipping 2205 matching lines @@
             'utility',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
           ],
         }]
     }],
   ],  # 'conditions'
 }