Delete dead consumer enrollment code.

components/policy/core/common/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/features.gni")
 
 source_set("common") {
   visibility = [
     "//components/policy/*",
     "//components/syncable_prefs/*",
@@ skipping 205 matching lines @@
       "//base",
     ]
   }
 }
 
 if (enable_configuration_policy) {
   source_set("unit_tests") {
     testonly = true
     sources = [
       "cloud/cloud_policy_client_unittest.cc",
-      "cloud/cloud_policy_constants_unittest.cc",
       "cloud/cloud_policy_core_unittest.cc",
       "cloud/cloud_policy_manager_unittest.cc",
       "cloud/cloud_policy_refresh_scheduler_unittest.cc",
       "cloud/cloud_policy_service_unittest.cc",
       "cloud/cloud_policy_validator_unittest.cc",
       "cloud/device_management_service_unittest.cc",
       "cloud/policy_header_io_helper_unittest.cc",
       "cloud/policy_header_service_unittest.cc",
       "cloud/user_info_fetcher_unittest.cc",
       "generate_policy_source_unittest.cc",
@@ skipping 53 matching lines @@
       "//components/policy:policy_component_test_support",
       "//components/prefs:test_support",
       "//components/prefs:test_support",
       "//google_apis",
       "//net:test_support",
       "//testing/gmock",
       "//testing/gtest",
     ]
   }
 }