Add AffiliationFetcher to fetch authoritative affiliation information regarding facets.

components/password_manager/core/browser/BUILD.gn

 # 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.
 
 if (is_android) {
   import("//build/config/android/config.gni")
 }
 
 config("password_manager_config") {
   # Sync (not supported in Android WebView).
   if (!is_android || !is_android_webview_build) {
     defines = [ "PASSWORD_MANAGER_ENABLE_SYNC" ]
   }
 }
 
 static_library("browser") {
   sources = [
+    "affiliation_fetcher_delegate.h",
+    "affiliation_fetcher.cc",
+    "affiliation_fetcher.h",
     "affiliation_utils.cc",
     "affiliation_utils.h",
     "browser_save_password_progress_logger.cc",
     "browser_save_password_progress_logger.h",
     "credential_manager_dispatcher.h",
     "log_receiver.h",
     "log_router.cc",
     "log_router.h",
     "login_database.cc",
     "login_database.h",
@@ skipping 28 matching lines @@
     "psl_matching_helper.cc",
     "psl_matching_helper.h",
     "webdata/logins_table.cc",
     "webdata/logins_table.h",
     "webdata/logins_table_win.cc",
     "webdata/password_web_data_service_win.cc",
     "webdata/password_web_data_service_win.h",
   ]
 
   deps = [
+    ":proto",
     "//base",
     "//components/autofill/core/common",
     "//components/keyed_service/core",
     "//components/os_crypt",
     "//components/password_manager/core/common",
     "//net",
     "//sql",
+    '//third_party/protobuf:protobuf_lite',
     "//url",
   ]
 
   if (is_mac) {
     # TODO(blundell): Provide the iOS login DB implementation and then
     # also exclude the POSIX one from iOS. http://crbug.com/341429
     sources -= [ "login_database_posix.cc" ]
   } else if (is_win) {
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     cflags = [ "/wd4267" ]
   }
 
   public_configs = [ ":password_manager_config" ]
 
   # Sync (not supported in Android WebView).
   if (!is_android || !is_android_webview_build) {
     sources += [
       "password_syncable_service.cc",
       "password_syncable_service.h",
     ]
     deps += [ "//sync" ]
   }
 }
 
+proto_library("proto") {
+  sources = [
+    "affiliation_api.proto"
+  ]
+}
+
 source_set("test_support") {
   testonly = true
   sources = [
     "mock_password_store.cc",
     "mock_password_store.h",
     "password_form_data.cc",
     "password_form_data.h",
     "stub_password_manager_client.cc",
     "stub_password_manager_client.h",
     "stub_password_manager_driver.cc",
     "stub_password_manager_driver.h",
     "test_password_store.cc",
     "test_password_store.h",
   ]
 
   public_deps = [
     ":browser",
   ]
   deps = [
     "//base",
     "//components/autofill/core/common",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }