chrome: Cleanup class/struct forward declarations

chrome/browser/ui/website_settings/website_settings_ui.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_WEBSITE_SETTINGS_WEBSITE_SETTINGS_UI_H_
 #define CHROME_BROWSER_UI_WEBSITE_SETTINGS_WEBSITE_SETTINGS_UI_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/strings/string16.h"
 #include "chrome/browser/ui/website_settings/website_settings.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/content_settings/core/common/content_settings_types.h"
 #include "content/public/browser/permission_type.h"
 #include "ui/gfx/native_widget_types.h"
 
-class GURL;
 class Profile;
 class WebsiteSettings;
 
-namespace base {
-class Value;
-};
-
 namespace gfx {
 class Image;
 }
 
 namespace net {
 class X509Certificate;
 }
 
 // The class |WebsiteSettingsUI| specifies the platform independent
 // interface of the website settings UI. The website settings UI displays
@@ skipping 167 matching lines @@
 
   // Selects the tab with the given |tab_id|.
   virtual void SetSelectedTab(TabId tab_id) = 0;
 };
 
 typedef WebsiteSettingsUI::CookieInfoList CookieInfoList;
 typedef WebsiteSettingsUI::PermissionInfoList PermissionInfoList;
 typedef WebsiteSettingsUI::ChosenObjectInfoList ChosenObjectInfoList;
 
 #endif  // CHROME_BROWSER_UI_WEBSITE_SETTINGS_WEBSITE_SETTINGS_UI_H_