Plumb context through for serialization.

Change-Id: I2a49f57aa7576604deeac898a7cceb36ae68d66f
diff --git a/rsMesh.h b/rsMesh.h
index 7ca63cf..9b61ebe 100644
--- a/rsMesh.h
+++ b/rsMesh.h
@@ -59,7 +59,7 @@
     Mesh(Context *, uint32_t vertexBuffersCount, uint32_t primitivesCount);
     ~Mesh();
 
-    virtual void serialize(OStream *stream) const;
+    virtual void serialize(Context *rsc, OStream *stream) const;
     virtual RsA3DClassID getClassId() const { return RS_A3D_CLASS_ID_MESH; }
     static Mesh *createFromStream(Context *rsc, IStream *stream);
     void init();
@@ -83,7 +83,7 @@
     // Bounding volumes
     float mBBoxMin[3];
     float mBBoxMax[3];
-    void computeBBox();
+    void computeBBox(Context *rsc);
 protected:
     ObjectBaseRef<Allocation> *mVertexBuffers;
     ObjectBaseRef<Allocation> *mIndexBuffers;