Implement throttling logic for fetching affiliation information.

components/password_manager.gypi

 # Copyright 2014 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.
 
 {
   'targets': [
     {
       # GN version: //components/password_manager/core/browser
       'target_name': 'password_manager_core_browser',
       'type': 'static_library',
@@ skipping 14 matching lines @@
       'include_dirs': [
         '..',
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
         'password_manager/core/browser/affiliation_backend.cc',
         'password_manager/core/browser/affiliation_backend.h',
         'password_manager/core/browser/affiliation_fetcher_delegate.h',
         'password_manager/core/browser/affiliation_database.cc',
         'password_manager/core/browser/affiliation_database.h',
+        'password_manager/core/browser/affiliation_fetch_throttler.cc',
+        'password_manager/core/browser/affiliation_fetch_throttler.h',
+        'password_manager/core/browser/affiliation_fetch_throttler_delegate.h',
         'password_manager/core/browser/affiliation_fetcher.cc',
         'password_manager/core/browser/affiliation_fetcher.h',
         'password_manager/core/browser/affiliation_service.cc',
         'password_manager/core/browser/affiliation_service.h',
         'password_manager/core/browser/affiliation_utils.cc',
         'password_manager/core/browser/affiliation_utils.h',
         'password_manager/core/browser/browser_save_password_progress_logger.cc',
         'password_manager/core/browser/browser_save_password_progress_logger.h',
         'password_manager/core/browser/export/csv_writer.cc',
         'password_manager/core/browser/export/csv_writer.h',
@@ skipping 221 matching lines @@
             'password_manager/content/browser/credential_manager_password_form_manager.cc',
             'password_manager/content/browser/credential_manager_password_form_manager.h',
             'password_manager/content/browser/password_manager_internals_service_factory.cc',
             'password_manager/content/browser/password_manager_internals_service_factory.h',
           ],
         },
       ],
     }],
   ],
 }