Reify view ownership as a message pipe.

examples/ui/shapes/shapes_view.cc

Index: examples/ui/shapes/shapes_view.cc
diff --git a/examples/ui/shapes/shapes_view.cc b/examples/ui/shapes/shapes_view.cc
index 8bea9c332dfd6179e8069ea67516efe07191b197..1a6803bfd4e7b2de93cb120ab6ca9bab00acf4a7 100644
--- a/examples/ui/shapes/shapes_view.cc
+++ b/examples/ui/shapes/shapes_view.cc
@@ -19,8 +19,8 @@ constexpr uint32_t kRootNodeId = mojo::gfx::composition::kSceneRootNodeId;
 
 ShapesView::ShapesView(
     mojo::ApplicationImpl* app_impl,
-    const mojo::ui::ViewProvider::CreateViewCallback& create_view_callback)
-    : GaneshView(app_impl, "Shapes", create_view_callback) {}
+    mojo::InterfaceRequest<mojo::ui::ViewOwner> view_owner_request)
+    : GaneshView(app_impl, view_owner_request.Pass(), "Shapes") {}
 
 ShapesView::~ShapesView() {}