First try at a user management screen for the desktop

chrome/browser/ui/webui/signin/user_chooser_screen_handler.h

+// Copyright (c) 2013 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_SIGNIN_USER_CHOOSER_SCREEN_HANDLER_H_
+#define CHROME_BROWSER_UI_WEBUI_SIGNIN_USER_CHOOSER_SCREEN_HANDLER_H_
+
+#include "base/values.h"
+#include "chrome/browser/profiles/avatar_menu_model.h"
+#include "content/public/browser/web_ui_message_handler.h"
+
+class UserChooserScreenHandler : public content::WebUIMessageHandler {
+ public:
+  UserChooserScreenHandler();
+  virtual ~UserChooserScreenHandler();
+
+  // WebUIMessageHandler implementation.
+  virtual void RegisterMessages() OVERRIDE;
+
+  void GetLocalizedValues(base::DictionaryValue* localized_strings);
+
+ private:
+  void HandleInitialize(const base::ListValue* args);
+  void HandleAddUser(const base::ListValue* args);
+  void HandleLaunchGuest(const base::ListValue* args);
+  void HandleLaunchUser(const base::ListValue* args);
+  void HandleRemoveUser(const base::ListValue* args);
+
+  // Sends user list to account chooser.
+  void SendUserList();
+
+  // A model of all the profile information used to launch
+  // a selected user.
+  scoped_ptr<AvatarMenuModel> avatar_menu_model_;
+
+  DISALLOW_COPY_AND_ASSIGN(UserChooserScreenHandler);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_SIGNIN_USER_CHOOSER_SCREEN_HANDLER_H_