chrome: Cleanup class/struct forward declarations

chrome/browser/ui/webui/options/startup_pages_handler.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_OPTIONS_STARTUP_PAGES_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_STARTUP_PAGES_HANDLER_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 #include "components/omnibox/browser/autocomplete_controller_delegate.h"
 #include "components/prefs/pref_change_registrar.h"
 #include "components/prefs/pref_member.h"
 #include "ui/base/models/table_model_observer.h"
 
 class AutocompleteController;
 class CustomHomePagesTableModel;
-class TemplateURLService;
 
 namespace options {
 
 // Chrome browser options page UI handler.
 class StartupPagesHandler : public OptionsPageUIHandler,
                             public AutocompleteControllerDelegate,
                             public ui::TableModelObserver {
  public:
   StartupPagesHandler();
   ~StartupPagesHandler() override;
@@ skipping 55 matching lines @@
 
   // The set of pages to launch on startup.
   std::unique_ptr<CustomHomePagesTableModel> startup_custom_pages_table_model_;
 
   DISALLOW_COPY_AND_ASSIGN(StartupPagesHandler);
 };
 
 }  // namespace options
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_STARTUP_PAGES_HANDLER_H_