Add device policy to disallow shutdown - ash UI modifications

chrome/browser/ui/webui/chromeos/login/core_oobe_handler.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/ui/webui/chromeos/login/core_oobe_handler.h"
 
 #include "ash/shell.h"
 #include "base/prefs/pref_service.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 223 matching lines @@
 void CoreOobeHandler::SetKeyboardState(bool shown, const gfx::Rect& bounds) {
   CallJS("setKeyboardState", shown, bounds.width(), bounds.height());
 }
 
 void CoreOobeHandler::SetClientAreaSize(int width, int height) {
   CallJS("setClientAreaSize", width, height);
 }
 
 void CoreOobeHandler::HandleInitialized() {
   oobe_ui_->InitializeHandlers();
+
+  // Initialize the ShutdownPolicyObserver and trigger an initial update.
+  oobe_ui_->InitShutdownPolicyObserver();
 }
 
 void CoreOobeHandler::HandleSkipUpdateEnrollAfterEula() {
   WizardController* controller = WizardController::default_controller();
   DCHECK(controller);
   if (controller)
     controller->SkipUpdateEnrollAfterEula();
 }
 
 void CoreOobeHandler::HandleUpdateCurrentScreen(const std::string& screen) {
@@ skipping 65 matching lines @@
 void CoreOobeHandler::ShowOobeUI(bool show) {
   if (show == show_oobe_ui_)
     return;
 
   show_oobe_ui_ = show;
 
   if (page_is_ready())
     UpdateOobeUIVisibility();
 }
 
+void CoreOobeHandler::UpdateShutdownButtonVisibility(
+    bool shutdown_button_visible) {
+  CallJS("showShutdown", shutdown_button_visible);
+}
+
 void CoreOobeHandler::UpdateA11yState() {
 #if !defined(USE_ATHENA)
   // TODO(dpolukhin): crbug.com/412891
   DCHECK(MagnificationManager::Get());
   base::DictionaryValue a11y_info;
   a11y_info.SetBoolean("highContrastEnabled",
                        AccessibilityManager::Get()->IsHighContrastEnabled());
   a11y_info.SetBoolean("largeCursorEnabled",
                        AccessibilityManager::Get()->IsLargeCursorEnabled());
   a11y_info.SetBoolean("spokenFeedbackEnabled",
@@ skipping 95 matching lines @@
 
 void CoreOobeHandler::InitDemoModeDetection() {
   demo_mode_detector_.InitDetection();
 }
 
 void CoreOobeHandler::StopDemoModeDetection() {
   demo_mode_detector_.StopDetection();
 }
 
 }  // namespace chromeos