[sync] Componentize sync: Part 6: Add more SYNC_EXPORTs to files in src/sync/

sync/internal_api/public/base/progress_marker_map.h

Index: sync/internal_api/public/base/progress_marker_map.h
diff --git a/sync/internal_api/public/base/progress_marker_map.h b/sync/internal_api/public/base/progress_marker_map.h
index 7091ca131d5366daf63d6d43143208f8322c5f03..cf022e2726b1ca6decbd0a57f86a7fed1bf052dc 100644
--- a/sync/internal_api/public/base/progress_marker_map.h
+++ b/sync/internal_api/public/base/progress_marker_map.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// 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.
 //
@@ -27,7 +27,7 @@ namespace syncer {
 // DataTypeProgressMarkers.
 typedef std::map<ModelType, std::string> ProgressMarkerMap;
 
-scoped_ptr<base::DictionaryValue> ProgressMarkerMapToValue(
+SYNC_EXPORT_PRIVATE scoped_ptr<base::DictionaryValue> ProgressMarkerMapToValue(
     const ProgressMarkerMap& marker_map);
 
 }  // namespace syncer