[sync] Componentize sync: Part Final: Target 'sync' is now its own component

sync/syncable/syncable_base_transaction.h

Index: sync/syncable/syncable_base_transaction.h
diff --git a/sync/syncable/syncable_base_transaction.h b/sync/syncable/syncable_base_transaction.h
index 763f68d15ae47c43352220b1986c95df2ea0ec43..17cddde86fdafd8b782412f788da45317e832bcf 100644
--- a/sync/syncable/syncable_base_transaction.h
+++ b/sync/syncable/syncable_base_transaction.h
@@ -31,7 +31,7 @@ enum WriterTag {
 // Make sure to update this if you update WriterTag.
 std::string WriterTagToString(WriterTag writer_tag);
 
-class SYNC_EXPORT_PRIVATE BaseTransaction {
+class SYNC_EXPORT BaseTransaction {
  public:
   inline Directory* directory() const { return directory_; }
   inline Id root_id() const { return Id(); }