Login screen and Guest mode should use device owner preference

chrome/browser/browser_process_impl.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/browser_process_impl.h"
 
 #include <algorithm>
 #include <map>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/alias.h"
+#include "base/i18n/time_formatting.h"
 #include "base/path_service.h"
 #include "base/prefs/json_pref_store.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "chrome/browser/automation/automation_provider_list.h"
 #include "chrome/browser/background/background_mode_manager.h"
 #include "chrome/browser/chrome_browser_main.h"
@@ skipping 665 matching lines @@
   // initial commit.  This comment seems unrelated, bit-rotten and
   // a candidate for removal.
   // Initialize ResourceBundle which handles files loaded from external
   // sources. This has to be done before uninstall code path and before prefs
   // are registered.
   registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 #if defined(OS_CHROMEOS)
   registry->RegisterStringPref(prefs::kOwnerLocale, std::string());
   registry->RegisterStringPref(prefs::kHardwareKeyboardLayout,
                                std::string());
+  registry->RegisterBooleanPref(prefs::kOwnerPrefUse24HourClock,
+                                base::GetHourClockType() == base::k24HourClock);
 #endif  // defined(OS_CHROMEOS)
 #if !defined(OS_CHROMEOS)
   registry->RegisterBooleanPref(
       prefs::kMetricsReportingEnabled,
       GoogleUpdateSettings::GetCollectStatsConsent());
 #endif  // !defined(OS_CHROMEOS)
 
 #if defined(OS_ANDROID)
   registry->RegisterBooleanPref(
       prefs::kCrashReportingEnabled, false);
@@ skipping 361 matching lines @@
 }
 
 void BrowserProcessImpl::OnAutoupdateTimer() {
   if (CanAutorestartForUpdate()) {
     DLOG(WARNING) << "Detected update.  Restarting browser.";
     RestartBackgroundInstance();
   }
 }
 
 #endif  // (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)