Add device policy to disallow shutdown - WebUI modifications

chrome/browser/chromeos/settings/shutdown_policy_handler.cc

 // Copyright (c) 2014 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/settings/shutdown_policy_handler.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "chromeos/settings/cros_settings_names.h"
 #include "chromeos/settings/cros_settings_provider.h"
 
 namespace chromeos {
 
 ShutdownPolicyHandler::ShutdownPolicyHandler(CrosSettings* cros_settings,
                                              Delegate* delegate)
     : cros_settings_(cros_settings), delegate_(delegate), weak_factory_(this) {
   if (delegate_) {
     shutdown_policy_subscription_ = cros_settings_->AddSettingsObserver(
         kRebootOnShutdown,
         base::Bind(&ShutdownPolicyHandler::OnShutdownPolicyChanged,
                    weak_factory_.GetWeakPtr()));
   }
 }
 
-ShutdownPolicyHandler::~ShutdownPolicyHandler() {
-}
+ShutdownPolicyHandler::~ShutdownPolicyHandler() {}
 
 void ShutdownPolicyHandler::Shutdown() {
   shutdown_policy_subscription_.reset();
   delegate_ = nullptr;
 }
 
 void ShutdownPolicyHandler::CallDelegate(bool reboot_on_shutdown) {
   if (delegate_)
     delegate_->OnShutdownPolicyChanged(reboot_on_shutdown);
 }
@@ skipping 12 matching lines @@
   if (status != CrosSettingsProvider::TRUSTED)
     return;
 
   // Get the updated policy.
   bool reboot_on_shutdown = false;
   cros_settings_->GetBoolean(kRebootOnShutdown, &reboot_on_shutdown);
   callback.Run(reboot_on_shutdown);
 }
 
 }  // namespace chromeos