Add a pref checkbox to enable/disable screen lock for ChromeOs.

chrome/common/pref_names.cc

 // Copyright (c) 2010 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/common/pref_names.h"
 
 namespace prefs {
 
 // *************** PROFILE PREFS ***************
 // These are attached to the user profile
@@ skipping 362 matching lines @@
 const char kLabsAdvancedFilesystemEnabled[] =
     "settings.labs.advanced_filesystem";
 
 // A boolean pref which turns on the mediaplayer.
 const char kLabsMediaplayerEnabled[] = "settings.labs.mediaplayer";
 
 // An integer pref which maps to the extension state for Talk.
 const char kLabsTalkEnabled[] =
     "extensions.settings.ggnioahjipcehijkhpdjekioddnjoben.state";
 
+// A boolean pref that turns on screen locker.
+const char kEnableScreenLock[] = "settings.enable_screen_lock";
+
 #endif  // defined(OS_CHROMEOS)
 
 // The disabled messages in IPC logging.
 const char kIpcDisabledMessages[] = "ipc_log_disabled_messages";
 
 // A boolean pref set to true if a Home button to open the Home pages should be
 // visible on the toolbar.
 const char kShowHomeButton[] = "browser.show_home_button";
 
 // A boolean pref set to true if the Page and Options menu buttons should be
@@ skipping 625 matching lines @@
 // String specifying the proxy server. For a specification of the expected
 // syntax see net::ProxyConfig::ProxyRules::ParseFromString().
 const char kProxyServer[] = "proxy.server";
 // URL to the proxy .pac file.
 const char kProxyPacUrl[] = "proxy.pac_url";
 // String containing proxy bypass rules. For a specification of the
 // expected syntax see net::ProxyBypassRules::ParseFromString().
 const char kProxyBypassList[] = "proxy.bypass_list";
 
 }  // namespace prefs