Login screen and Guest mode should use device owner preference

chrome/browser/chromeos/policy/device_policy_decoder_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/device_policy_decoder_chromeos.h"
 
 #include <limits>
 
 #include "base/callback.h"
 #include "base/logging.h"
@@ skipping 551 matching lines @@
     if (policy.system_timezone().has_timezone()) {
       policies->Set(key::kSystemTimezone,
                     POLICY_LEVEL_MANDATORY,
                     POLICY_SCOPE_MACHINE,
                     Value::CreateStringValue(
                         policy.system_timezone().timezone()),
                     NULL);
     }
   }
 
+  if (policy.has_use_24hour_clock()) {
+    if (policy.use_24hour_clock().has_use_24hour_clock()) {
+      policies->Set(key::kSystemUse24HourClock,
+                    POLICY_LEVEL_MANDATORY,
+                    POLICY_SCOPE_MACHINE,
+                    Value::CreateBooleanValue(
+                        policy.use_24hour_clock().use_24hour_clock()),
+                    NULL);
+    }
+  }
+
   if (policy.has_allow_redeem_offers()) {
     const em::AllowRedeemChromeOsRegistrationOffersProto& container(
         policy.allow_redeem_offers());
     if (container.has_allow_redeem_offers()) {
       policies->Set(key::kDeviceAllowRedeemChromeOsRegistrationOffers,
                     POLICY_LEVEL_MANDATORY,
                     POLICY_SCOPE_MACHINE,
                     Value::CreateBooleanValue(
                         container.allow_redeem_offers()),
                     NULL);
@@ skipping 72 matching lines @@
   DecodeLoginPolicies(policy, policies);
   DecodeKioskPolicies(policy, policies, install_attributes);
   DecodeNetworkPolicies(policy, policies, install_attributes);
   DecodeReportingPolicies(policy, policies);
   DecodeAutoUpdatePolicies(policy, policies);
   DecodeAccessibilityPolicies(policy, policies);
   DecodeGenericPolicies(policy, policies);
 }
 
 }  // namespace policy