Add DeviceADPolicyManager to provide AD policy.

chrome/browser/chromeos/policy/enrollment_handler_chromeos.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 "chrome/browser/chromeos/policy/enrollment_handler_chromeos.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 154 matching lines @@
               new em::PolicyFetchResponse(*policy)),
           background_task_runner_));
 
   validator->ValidateTimestamp(
       base::Time(), base::Time::NowFromSystemTime(),
       CloudPolicyValidatorBase::TIMESTAMP_FULLY_VALIDATED);
 
   // If this is re-enrollment, make sure that the new policy matches the
   // previously-enrolled domain.
   std::string domain;
-  if (install_attributes_->IsEnterpriseDevice()) {
+  if (install_attributes_->IsEnterpriseManaged()) {
     domain = install_attributes_->GetDomain();
     validator->ValidateDomain(domain);
   }
   validator->ValidateDMToken(client->dm_token(),
                              CloudPolicyValidatorBase::DM_TOKEN_REQUIRED);
   validator->ValidatePolicyType(dm_protocol::kChromeDevicePolicyType);
   validator->ValidatePayload();
   // If |domain| is empty here, the policy validation code will just use the
   // domain from the username field in the policy itself to do key validation.
   // TODO(mnissler): Plumb the enrolling user's username into this object so we
@@ skipping 338 matching lines @@
     callback.Run(status);
 }
 
 void EnrollmentHandlerChromeOS::SetStep(EnrollmentStep step) {
   DCHECK_LE(enrollment_step_, step);
   VLOG(1) << "Step: " << step;
   enrollment_step_ = step;
 }
 
 }  // namespace policy