components: Cleanup class/struct fwd declarations

components/component_updater/component_updater_service.h

 // Copyright 2014 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 COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_H_
 #define COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/version.h"
 #include "components/update_client/update_client.h"
 #include "url/gurl.h"
 
 class ComponentsUI;
 class PluginObserver;
-class SupervisedUserWhitelistService;
 
 namespace base {
-class DictionaryValue;
-class FilePath;
 class SequencedTaskRunner;
 }
 
-namespace content {
-class ResourceThrottle;
-}
-
-namespace net {
-class URLRequestContextGetter;
-class URLRequest;
-}
-
 namespace policy {
 class ComponentUpdaterPolicyTest;
 }
 
 namespace update_client {
 class ComponentInstaller;
 class Configurator;
 struct CrxComponent;
 struct CrxUpdateItem;
 }
@@ skipping 128 matching lines @@
                               const Callback& callback) = 0;
 };
 
 // Creates the component updater.
 std::unique_ptr<ComponentUpdateService> ComponentUpdateServiceFactory(
     const scoped_refptr<Configurator>& config);
 
 }  // namespace component_updater
 
 #endif  // COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_H_