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

sync/internal_api/public/change_record.h

Index: sync/internal_api/public/change_record.h
diff --git a/sync/internal_api/public/change_record.h b/sync/internal_api/public/change_record.h
index d7dc587161ccb18a1c2766c753c4ce9ff6ac5833..062d6fae0ddb7401d7d4ea1863486a1607264096 100644
--- a/sync/internal_api/public/change_record.h
+++ b/sync/internal_api/public/change_record.h
@@ -41,7 +41,7 @@ class SYNC_EXPORT ExtraPasswordChangeRecordData {
 // operation.  This gives the sync id of the node that changed, and the type
 // of change.  To get the actual property values after an ADD or UPDATE, the
 // client should get the node with InitByIdLookup(), using the provided id.
-struct ChangeRecord {
+struct SYNC_EXPORT_PRIVATE ChangeRecord {
   enum Action {
     ACTION_ADD,
     ACTION_DELETE,