First try at a user management screen for the desktop

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

Index: chrome/browser/ui/webui/signin/user_chooser_screen_handler.h
diff --git a/chrome/browser/ui/webui/signin/user_chooser_screen_handler.h b/chrome/browser/ui/webui/signin/user_chooser_screen_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..4822f76cb74e68b647ccd5723a14a1ff5fd5e10c
--- /dev/null
+++ b/chrome/browser/ui/webui/signin/user_chooser_screen_handler.h
@@ -0,0 +1,39 @@
+// 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/compiler_specific.h"
+#include "content/public/browser/web_ui_message_handler.h"
+
+namespace base {
+class DictionaryValue;
+class ListValue;
+}
+
+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();
+
+  DISALLOW_COPY_AND_ASSIGN(UserChooserScreenHandler);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_SIGNIN_USER_CHOOSER_SCREEN_HANDLER_H_