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diff --git a/chrome/browser/sync/engine/process_updates_command.h b/chrome/browser/sync/engine/process_updates_command.h
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+++ b/chrome/browser/sync/engine/process_updates_command.h
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+// Copyright (c) 2006-2009 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_SYNC_ENGINE_PROCESS_UPDATES_COMMAND_H_
+#define CHROME_BROWSER_SYNC_ENGINE_PROCESS_UPDATES_COMMAND_H_
+
+#include "chrome/browser/sync/engine/model_changing_syncer_command.h"
+#include "chrome/browser/sync/engine/syncer_types.h"
+
+namespace syncable {
+class ScopedDirLookup;
+}
+
+namespace sync_pb {
+class SyncEntity;
+}
+
+namespace browser_sync {
+
+class SyncerSession;
+
+// A syncer command for processing updates.
+//
+// Preconditions - updates in the SyncerSesssion have been downloaded
+//                 and verified.
+//
+// Postconditions - All of the verified SyncEntity data will be copied to
+//                  the server fields of the corresponding syncable entries.
+class ProcessUpdatesCommand : public ModelChangingSyncerCommand {
+ public:
+  ProcessUpdatesCommand();
+  virtual ~ProcessUpdatesCommand();
+
+  virtual void ModelChangingExecuteImpl(SyncerSession* session);
+  ServerUpdateProcessingResult ProcessUpdate(
+      const syncable::ScopedDirLookup& dir,
+      const sync_pb::SyncEntity& pb_entry);
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ProcessUpdatesCommand);
+};
+
+}  // namespace browser_sync
+
+#endif  // CHROME_BROWSER_SYNC_ENGINE_PROCESS_UPDATES_COMMAND_H_