Don't send lock screen request for guest sessions.

chrome/browser/ui/views/aura/chrome_shell_delegate.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/views/aura/chrome_shell_delegate.h"
 
 #include "ash/launcher/launcher_types.h"
 #include "ash/wm/window_util.h"
 #include "base/command_line.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/prefs/incognito_mode_prefs.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/views/aura/app_list/app_list_model_builder.h"
 #include "chrome/browser/ui/views/aura/app_list/app_list_view_delegate.h"
 #include "chrome/browser/ui/views/aura/launcher_icon_updater.h"
 #include "chrome/browser/ui/views/aura/status_area_host_aura.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
+#include "chrome/common/chrome_switches.h"
 #include "grit/theme_resources.h"
 #include "ui/aura/window.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/dbus/dbus_thread_manager.h"
 #include "chrome/browser/chromeos/dbus/power_manager_client.h"
 #endif
 namespace {
 
 // Returns a list of Aura windows from a BrowserList, using either a
@@ skipping 31 matching lines @@
 
 views::Widget* ChromeShellDelegate::CreateStatusArea() {
   status_area_host_.reset(new StatusAreaHostAura());
   views::Widget* status_area_widget =
       status_area_host_.get()->CreateStatusArea();
   return status_area_widget;
 }
 
 #if defined(OS_CHROMEOS)
 void ChromeShellDelegate::LockScreen() {
-  chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->
-      NotifyScreenLockRequested();
+  if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kGuestSession)) {
+    chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->
+        NotifyScreenLockRequested();
+  }
 }
 #endif
 
 void ChromeShellDelegate::Exit() {
   BrowserList::AttemptUserExit();
 }
 
 void ChromeShellDelegate::BuildAppListModel(ash::AppListModel* model) {
   AppListModelBuilder builder(ProfileManager::GetDefaultProfile(),
                               model);
@@ skipping 45 matching lines @@
 }
 
 int ChromeShellDelegate::GetBrowserShortcutResourceId() {
   return IDR_PRODUCT_LOGO_32;
 }
 
 string16 ChromeShellDelegate::GetLauncherItemTitle(
     const ash::LauncherItem& item) {
   return LauncherIconUpdater::GetTitleByID(item.id);
 }