Add ManagementMode enum and GetManagementMode().

chrome/browser/chromeos/policy/device_local_account_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 "chrome/browser/chromeos/policy/device_local_account_policy_service.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 32 matching lines @@
 #include "policy/proto/device_management_backend.pb.h"
 #include "url/gurl.h"
 
 namespace em = enterprise_management;
 
 namespace policy {
 
 namespace {
 
 // Creates and initializes a cloud policy client. Returns nullptr if the device
-// doesn't have credentials in device settings (i.e. is not
-// enterprise-enrolled).
+// is not enterprise-enrolled.
 scoped_ptr<CloudPolicyClient> CreateClient(
     chromeos::DeviceSettingsService* device_settings_service,
     DeviceManagementService* device_management_service,
     scoped_refptr<net::URLRequestContextGetter> system_request_context) {
   const em::PolicyData* policy_data = device_settings_service->policy_data();
   if (!policy_data ||
-      !policy_data->has_request_token() ||
-      !policy_data->has_device_id() ||
+      GetManagementMode(*policy_data) != MANAGEMENT_MODE_ENTERPRISE_MANAGED ||
       !device_management_service) {
     return scoped_ptr<CloudPolicyClient>();
   }
 
   scoped_refptr<net::URLRequestContextGetter> request_context =
       new SystemPolicyRequestContext(
           system_request_context, GetUserAgent());
 
   scoped_ptr<CloudPolicyClient> client(
       new CloudPolicyClient(std::string(), std::string(),
@@ skipping 487 matching lines @@
   }
   return nullptr;
 }
 
 void DeviceLocalAccountPolicyService::NotifyPolicyUpdated(
     const std::string& user_id) {
   FOR_EACH_OBSERVER(Observer, observers_, OnPolicyUpdated(user_id));
 }
 
 }  // namespace policy