[ChromeOS] Reland - Make WebUI login use only needed resources.

chrome/browser/ui/webui/chromeos/login/login_ui_helpers.h

-// Copyright (c) 2011 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_CHROMEOS_LOGIN_LOGIN_UI_HELPERS_H_
-#define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_LOGIN_UI_HELPERS_H_
-#pragma once
-
-#include <string>
-
-#include "base/string_piece.h"
-
-class FilePath;
-class RefCountedMemory;
-
-namespace base {
-class DictionaryValue;
-}
-
-namespace chromeos {
-
-// This class is used for encapsulating the statics and other other messy
-// external calls that are required for creating and getting the needed HTML
-// objects. This allows for easier mocking of this code and allows for
-// modularity. Since we don't currently unit the class that this code is related
-// to, there is a case for refactoring it back into LoginUIHTMLSource.
-class HTMLOperationsInterface {
- public:
-  HTMLOperationsInterface() {}
-  virtual ~HTMLOperationsInterface() {}
-
-  virtual base::StringPiece GetLoginHTML();
-  virtual std::string GetFullHTML(base::StringPiece login_html,
-                                  base::DictionaryValue* localized_strings);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(HTMLOperationsInterface);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_LOGIN_UI_HELPERS_H_