Remove old permission delegation prototype

chrome/test/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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 3244 matching lines @@
     "../browser/page_load_metrics/observers/ukm_page_load_metrics_observer_unittest.cc",
     "../browser/page_load_metrics/user_input_tracker_unittest.cc",
     "../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/cloud_policy_test_utils.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",
@@ skipping 1907 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }