Remove enterprise serial number recovery feature

components/policy/core/common/cloud/cloud_policy_service.cc

 // Copyright (c) 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.
 
 #include "components/policy/core/common/cloud/cloud_policy_service.h"
 
 #include <stddef.h>
 
 #include "base/callback.h"
 #include "base/logging.h"
@@ skipping 108 matching lines @@
         base::TimeDelta::FromMilliseconds(policy->timestamp());
   }
   client_->set_last_policy_timestamp(policy_timestamp);
 
   // Public key version.
   if (policy && policy->has_public_key_version())
     client_->set_public_key_version(policy->public_key_version());
   else
     client_->clear_public_key_version();
 
-  // Whether to submit the machine ID.
-  bool submit_machine_id = false;
-  if (policy && policy->has_valid_serial_number_missing())
-    submit_machine_id = policy->valid_serial_number_missing();
-  client_->set_submit_machine_id(submit_machine_id);
-
   // Finally, set up registration if necessary.
   if (policy && policy->has_request_token() && policy->has_device_id() &&
       !client_->is_registered()) {
     DVLOG(1) << "Setting up registration with request token: "
              << policy->request_token();
     client_->SetupRegistration(policy->request_token(),
                                policy->device_id());
   }
 
   if (refresh_state_ == REFRESH_POLICY_STORE)
@@ skipping 41 matching lines @@
 
 void CloudPolicyService::AddObserver(Observer* observer) {
   observers_.AddObserver(observer);
 }
 
 void CloudPolicyService::RemoveObserver(Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
 }  // namespace policy