components: Cleanup class/struct fwd declarations

components/sync/driver/sync_api_component_factory_mock.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 COMPONENTS_SYNC_DRIVER_SYNC_API_COMPONENT_FACTORY_MOCK_H__
 #define COMPONENTS_SYNC_DRIVER_SYNC_API_COMPONENT_FACTORY_MOCK_H__
 
 #include <memory>
 #include <string>
 
 #include "components/sync/base/model_type.h"
 #include "components/sync/driver/data_type_controller.h"
 #include "components/sync/driver/sync_api_component_factory.h"
 #include "components/sync/model/data_type_error_handler.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace syncer {
 
 class AssociatorInterface;
 class ChangeProcessor;
 class DataTypeEncryptionHandler;
-class DataTypeStatusTable;
-class SyncClient;
 
 class SyncApiComponentFactoryMock : public SyncApiComponentFactory {
  public:
   SyncApiComponentFactoryMock();
   SyncApiComponentFactoryMock(AssociatorInterface* model_associator,
                               ChangeProcessor* change_processor);
   ~SyncApiComponentFactoryMock() override;
 
   MOCK_METHOD2(RegisterDataTypes,
                void(SyncService* sync_service, const RegisterDataTypesMethod&));
@@ skipping 30 matching lines @@
   std::unique_ptr<AssociatorInterface> model_associator_;
   std::unique_ptr<ChangeProcessor> change_processor_;
   // LocalDeviceInfoProvider is initially owned by this class,
   // transferred to caller when CreateLocalDeviceInfoProvider is called.
   std::unique_ptr<LocalDeviceInfoProvider> local_device_;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_DRIVER_SYNC_API_COMPONENT_FACTORY_MOCK_H__