Fix dependencies on OutOfProcessPatcher.

components/update_client/component_unpacker.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_UPDATE_CLIENT_COMPONENT_UNPACKER_H_
 #define COMPONENTS_UPDATE_CLIENT_COMPONENT_UNPACKER_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner.h"
+#include "components/update_client/out_of_process_patcher.h"
 #include "components/update_client/update_client_errors.h"
 
 namespace update_client {
 
 class CrxInstaller;
 class ComponentPatcher;
-class OutOfProcessPatcher;
 
 // Deserializes the CRX manifest. The top level must be a dictionary.
 std::unique_ptr<base::DictionaryValue> ReadManifest(
     const base::FilePath& unpack_path);
 
 // In charge of unpacking the component CRX package and verifying that it is
 // well formed and the cryptographic signature is correct.
 //
 // This class should be used only by the component updater. It is inspired by
 // and overlaps with code in the extension's SandboxedUnpacker.
@@ skipping 99 matching lines @@
   UnpackerError error_;
   int extended_error_;
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(ComponentUnpacker);
 };
 
 }  // namespace update_client
 
 #endif  // COMPONENTS_UPDATE_CLIENT_COMPONENT_UNPACKER_H_