cros: Bind password echo with TouchView mode

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': {
     'build_angle_deqp_tests%': 0,
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
@@ skipping 852 matching lines @@
       'browser/chromeos/policy/restore_on_startup_browsertest_chromeos.cc',
       'browser/chromeos/policy/user_affiliation_browsertest.cc',
       'browser/chromeos/policy/user_cloud_external_data_manager_browsertest.cc',
       'browser/chromeos/policy/user_cloud_policy_manager_chromeos_browsertest.cc',
       'browser/chromeos/policy/user_policy_test_helper.cc',
       'browser/chromeos/policy/user_policy_test_helper.h',
       'browser/chromeos/policy/variations_service_policy_browsertest.cc',
       'browser/chromeos/power/peripheral_battery_observer_browsertest.cc',
       'browser/chromeos/preferences_chromeos_browsertest.cc',
       'browser/chromeos/profiles/profile_helper_browsertest.cc',
+      'browser/chromeos/ui/password_echo_controller_browsertest.cc',
       'browser/chromeos/settings/scoped_cros_settings_test_helper.cc',
       'browser/chromeos/settings/scoped_cros_settings_test_helper.h',
       'browser/chromeos/shutdown_policy_browsertest.cc',
       'browser/chromeos/system/device_disabling_browsertest.cc',
       'browser/chromeos/system/tray_accessibility_browsertest.cc',
       'browser/download/notification/download_notification_browsertest.cc',
       'browser/drive/drive_notification_manager_factory_browsertest.cc',
       'browser/extensions/api/certificate_provider/certificate_provider_apitest.cc',
       'browser/extensions/api/vpn_provider/vpn_provider_apitest.cc',
       'browser/ui/ash/launcher/arc_app_launcher_browsertest.cc',
@@ skipping 2689 matching lines @@
             'browser',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
           ],
         }]
     }],
   ],  # 'conditions'
 }