Add a lock to the managed user settings page and require authentication for unlocking.

chrome/browser/ui/webui/managed_user_passphrase_dialog.h

 // 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.
 
-#ifndef CHROME_BROWSER_UI_WEBUI_TAB_MODAL_CONFIRM_DIALOG_WEBUI_H_
-#define CHROME_BROWSER_UI_WEBUI_TAB_MODAL_CONFIRM_DIALOG_WEBUI_H_
-
-#if !(defined(USE_AURA) || defined(OS_CHROMEOS))
-#error Tab-modal confirm dialog should be shown with native UI.
-#endif
+#ifndef CHROME_BROWSER_UI_WEBUI_MANAGED_USER_PASSPHRASE_DIALOG_H_
+#define CHROME_BROWSER_UI_WEBUI_MANAGED_USER_PASSPHRASE_DIALOG_H_
 
 #include "base/basictypes.h"
+#include "base/callback.h"
 #include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "chrome/browser/ui/tab_modal_confirm_dialog.h"
 #include "ui/web_dialogs/web_dialog_delegate.h"
 
 class ConstrainedWebDialogDelegate;
+class Profile;
 
 namespace content {
 class WebContents;
 }
 
+namespace base {
+class Value;
+}
+
 // Displays a tab-modal dialog, i.e. a dialog that will block the current page
 // but still allow the user to switch to a different page.
 // To display the dialog, allocate this object on the heap. It will open the
 // dialog from its constructor and then delete itself when the user dismisses
 // the dialog.
-class TabModalConfirmDialogWebUI : public TabModalConfirmDialog,
-                                   public ui::WebDialogDelegate {
+class ManagedUserPassphraseDialog : public ui::WebDialogDelegate {
  public:
-  TabModalConfirmDialogWebUI(
-      TabModalConfirmDialogDelegate* dialog_delegate,
-      content::WebContents* web_contents);
+  // Creates a passphrase dialog which will be deleted automatically when the
+  // user closes the dialog.
+  ManagedUserPassphraseDialog(content::WebContents* web_contents,
+                              const base::Callback<void(bool)>& callback);
 
   // ui::WebDialogDelegate implementation.
   virtual ui::ModalType GetDialogModalType() const OVERRIDE;
   virtual string16 GetDialogTitle() const OVERRIDE;
   virtual GURL GetDialogContentURL() const OVERRIDE;
   virtual void GetWebUIMessageHandlers(
       std::vector<content::WebUIMessageHandler*>* handlers) const OVERRIDE;
   virtual void GetDialogSize(gfx::Size* size) const OVERRIDE;
   virtual std::string GetDialogArgs() const OVERRIDE;
   virtual void OnDialogClosed(const std::string& json_retval) OVERRIDE;
   virtual void OnCloseContents(content::WebContents* source,
                                bool* out_close_dialog) OVERRIDE;
   virtual bool ShouldShowDialogTitle() const OVERRIDE;
 
-  ConstrainedWebDialogDelegate* constrained_web_dialog_delegate() {
-    return constrained_web_dialog_delegate_;
-  }
+ private:
+  virtual ~ManagedUserPassphraseDialog();
 
- private:
-  virtual ~TabModalConfirmDialogWebUI();
+  void CreateDataSource(Profile* profile) const;
 
-  // TabModalConfirmDialog:
-  virtual void AcceptTabModalDialog() OVERRIDE;
-  virtual void CancelTabModalDialog() OVERRIDE;
+  base::Callback<void(bool)> callback_;
+  bool closing_;
 
-  scoped_ptr<TabModalConfirmDialogDelegate> delegate_;
-
-  // Deletes itself.
-  ConstrainedWebDialogDelegate* constrained_web_dialog_delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(TabModalConfirmDialogWebUI);
+  DISALLOW_COPY_AND_ASSIGN(ManagedUserPassphraseDialog);
 };
 
-#endif  // CHROME_BROWSER_UI_WEBUI_TAB_MODAL_CONFIRM_DIALOG_WEBUI_H_
+#endif  // CHROME_BROWSER_UI_WEBUI_MANAGED_USER_PASSPHRASE_DIALOG_H_