Plumb context through for serialization.

Change-Id: I2a49f57aa7576604deeac898a7cceb36ae68d66f
diff --git a/rsProgramFragment.h b/rsProgramFragment.h
index 4eb28e7..d580252 100644
--- a/rsProgramFragment.h
+++ b/rsProgramFragment.h
@@ -34,7 +34,7 @@
 
     virtual void setup(Context *, ProgramFragmentState *);
 
-    virtual void serialize(OStream *stream) const;
+    virtual void serialize(Context *rsc, OStream *stream) const;
     virtual RsA3DClassID getClassId() const { return RS_A3D_CLASS_ID_PROGRAM_FRAGMENT; }
     static ProgramFragment *createFromStream(Context *rsc, IStream *stream);