Add device policy to disallow shutdown

ash/test/test_lock_state_controller_delegate.cc

 // Copyright 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 "ash/test/test_lock_state_controller_delegate.h"
 
 namespace ash {
 namespace test {
 
 TestLockStateControllerDelegate::TestLockStateControllerDelegate()
     : num_lock_requests_(0),
+      num_restart_requests_(0),
       num_shutdown_requests_(0) {
 }
 
 TestLockStateControllerDelegate::~TestLockStateControllerDelegate() {
 }
 
 void TestLockStateControllerDelegate::RequestLockScreen() {
   ++num_lock_requests_;
 }
 
+void TestLockStateControllerDelegate::RequestRestart() {
+  ++num_restart_requests_;
+}
+
 void TestLockStateControllerDelegate::RequestShutdown() {
   ++num_shutdown_requests_;
 }
 
 }  // namespace test
 }  // namespace ash