Reify view ownership as a message pipe.

examples/ui/shapes/shapes_app.cc

Index: examples/ui/shapes/shapes_app.cc
diff --git a/examples/ui/shapes/shapes_app.cc b/examples/ui/shapes/shapes_app.cc
index 86443a1a0c37e0eb3f10669fc048b7df278b1176..917c2741f2027857119b4b72e86774eee93592d9 100644
--- a/examples/ui/shapes/shapes_app.cc
+++ b/examples/ui/shapes/shapes_app.cc
@@ -12,13 +12,12 @@ ShapesApp::ShapesApp() {}
 
 ShapesApp::~ShapesApp() {}
 
-bool ShapesApp::CreateView(
+void ShapesApp::CreateView(
     const std::string& connection_url,
+    mojo::InterfaceRequest<mojo::ui::ViewOwner> view_owner_request,
     mojo::InterfaceRequest<mojo::ServiceProvider> services,
-    mojo::ServiceProviderPtr exposed_services,
-    const mojo::ui::ViewProvider::CreateViewCallback& callback) {
-  new ShapesView(app_impl(), callback);
-  return true;
+    mojo::ServiceProviderPtr exposed_services) {
+  new ShapesView(app_impl(), view_owner_request.Pass());
 }
 
 }  // namespace examples