Adjust to changes in dune-grid(r7723)

dune/vtkgridfunction.hh

@@ -14,9 +14,8 @@ namespace Dune {
  *  \tparam CoefficientType The vector type for the coefficients.
 */
 template <class Basis, class CoefficientType>
-class VTKBasisGridFunction
-    : public VTKFunction<typename Basis::GridView::Grid> {
-  typedef VTKFunction<typename Basis::GridView::Grid> Base;
+class VTKBasisGridFunction : public VTKFunction<typename Basis::GridView> {
+  typedef VTKFunction<typename Basis::GridView> Base;
   typedef typename Basis::LocalFiniteElement::Traits::LocalBasisType::Traits::
       RangeType RangeType;