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

chrome/browser/chromeos/dom_ui/cros_personal_options_handler.h

Index: chrome/browser/chromeos/dom_ui/cros_personal_options_handler.h
diff --git a/chrome/browser/chromeos/dom_ui/cros_personal_options_handler.h b/chrome/browser/chromeos/dom_ui/cros_personal_options_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..d286461314b7b65533690edd0bc5b7f9ff40de11
--- /dev/null
+++ b/chrome/browser/chromeos/dom_ui/cros_personal_options_handler.h
@@ -0,0 +1,29 @@
+// 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_DOM_UI_CROS_PERSONAL_OPTIONS_HANDLER_H_
+#define CHROME_BROWSER_CHROMEOS_DOM_UI_CROS_PERSONAL_OPTIONS_HANDLER_H_
+
+#include "chrome/browser/dom_ui/options/options_ui.h"
+
+namespace chromeos {
+
+class CrosPersonalOptionsHandler : public OptionsPageUIHandler {
+ public:
+  CrosPersonalOptionsHandler();
+  virtual ~CrosPersonalOptionsHandler();
+
+  // Overridden from PersonalOptionsHandler:
+  virtual void GetLocalizedValues(DictionaryValue* localized_strings);
+  virtual void RegisterMessages();
+
+ private:
+  void LoadAccountPicture(const ListValue* args);
+
+  DISALLOW_COPY_AND_ASSIGN(CrosPersonalOptionsHandler);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_DOM_UI_CROS_PERSONAL_OPTIONS_HANDLER_H_