Implement default programs and implement defaults and parents for imports.
diff --git a/libs/rs/rsProgramFragmentStore.h b/libs/rs/rsProgramFragmentStore.h
index d862775..bd3a9f4 100644
--- a/libs/rs/rsProgramFragmentStore.h
+++ b/libs/rs/rsProgramFragmentStore.h
@@ -74,7 +74,9 @@
 public:
     ProgramFragmentStoreState();
     ~ProgramFragmentStoreState();
+    void init(Context *rsc, int32_t w, int32_t h);
 
+    ObjectBaseRef<ProgramFragmentStore> mDefault;
     ProgramFragmentStore *mPFS;
 };