Add a feature which, when enabled, blocks permissions after X prompt dismissals.

chrome/chrome_tests_unit.gypi

 # Copyright 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': {
     'chrome_unit_tests_sources': [
       # histograms.xml is analyzed by AboutFlagsHistogramTest, so this
       # dependency is needed to make commit bots run unit_tests on
       # histograms.xml changes.
       '../tools/metrics/histograms/histograms.xml',
@@ skipping 163 matching lines @@
       'browser/password_manager/chrome_password_manager_client_unittest.cc',
       'browser/password_manager/password_manager_internals_service_unittest.cc',
       'browser/password_manager/password_store_mac_unittest.cc',
       'browser/password_manager/password_store_proxy_mac_unittest.cc',
       'browser/password_manager/password_store_win_unittest.cc',
       'browser/password_manager/password_store_x_unittest.cc',
       'browser/password_manager/simple_password_store_mac_unittest.cc',
       'browser/permissions/chooser_context_base_unittest.cc',
       'browser/permissions/delegation_tracker_unittest.cc',
       'browser/permissions/permission_context_base_unittest.cc',
+      'browser/permissions/permission_decision_auto_blocker_unittest.cc',
       'browser/permissions/permission_manager_unittest.cc',
       'browser/permissions/permission_uma_util_unittest.cc',
       'browser/permissions/permission_util_unittest.cc',
       'browser/policy/cloud/cloud_policy_invalidator_unittest.cc',
       'browser/policy/cloud/remote_commands_invalidator_unittest.cc',
       'browser/policy/cloud/user_policy_signin_service_unittest.cc',
       'browser/policy/file_selection_dialogs_policy_handler_unittest.cc',
       'browser/policy/javascript_policy_handler_unittest.cc',
       'browser/policy/managed_bookmarks_policy_handler_unittest.cc',
       'browser/policy/policy_path_parser_unittest.cc',
@@ skipping 2843 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }