Move some sync/notifier to components/invalidation

components/invalidation/state_writer.h

 // Copyright 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.
 //
 // Simple interface for something that persists state.
 
-#ifndef SYNC_NOTIFIER_STATE_WRITER_H_
-#define SYNC_NOTIFIER_STATE_WRITER_H_
+#ifndef COMPONENTS_INVALIDATION_STATE_WRITER_H_
+#define COMPONENTS_INVALIDATION_STATE_WRITER_H_
 
 #include <string>
 
-#include "sync/base/sync_export.h"
+#include "components/invalidation/invalidation_export.h"
 
 namespace syncer {
 
-class SYNC_EXPORT_PRIVATE StateWriter {
+class INVALIDATION_EXPORT_PRIVATE StateWriter {
  public:
   virtual ~StateWriter() {}
 
   virtual void WriteState(const std::string& state) = 0;
 };
 
 }  // namespace syncer
 
-#endif  // SYNC_NOTIFIER_STATE_WRITER_H_
+#endif  // COMPONENTS_INVALIDATION_STATE_WRITER_H_