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

chrome/chrome_browser.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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 2353 matching lines @@
       'browser/password_manager/simple_password_store_mac.cc',
       'browser/password_manager/simple_password_store_mac.h',
     ],
     'chrome_browser_permissions_sources': [
       'browser/permissions/chooser_context_base.cc',
       'browser/permissions/chooser_context_base.h',
       'browser/permissions/delegation_tracker.cc',
       'browser/permissions/delegation_tracker.h',
       'browser/permissions/permission_context_base.cc',
       'browser/permissions/permission_context_base.h',
+      'browser/permissions/permission_decision_auto_blocker.cc',
+      'browser/permissions/permission_decision_auto_blocker.h',
       'browser/permissions/permission_infobar_delegate.cc',
       'browser/permissions/permission_infobar_delegate.h',
       'browser/permissions/permission_manager.cc',
       'browser/permissions/permission_manager.h',
       'browser/permissions/permission_manager_factory.cc',
       'browser/permissions/permission_manager_factory.h',
       'browser/permissions/permission_request.cc',
       'browser/permissions/permission_request.h',
       'browser/permissions/permission_request_id.cc',
       'browser/permissions/permission_request_id.h',
@@ skipping 1942 matching lines @@
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
             'common',
           ],
         },
       ],
     }],
   ],
 }