Reify view ownership as a message pipe.

mojo/ui/ganesh_view.cc

Index: mojo/ui/ganesh_view.cc
diff --git a/mojo/ui/ganesh_view.cc b/mojo/ui/ganesh_view.cc
index 56962e561ccd35f039350cd787e8dbf91d541e24..395888a1e04a44cbe0bdab13cfd2cee2fd369dc6 100644
--- a/mojo/ui/ganesh_view.cc
+++ b/mojo/ui/ganesh_view.cc
@@ -13,9 +13,9 @@ namespace ui {
 
 GaneshView::GaneshView(
     mojo::ApplicationImpl* app_impl,
-    const std::string& label,
-    const mojo::ui::ViewProvider::CreateViewCallback& create_view_callback)
-    : BaseView(app_impl, label, create_view_callback),
+    mojo::InterfaceRequest<mojo::ui::ViewOwner> view_owner_request,
+    const std::string& label)
+    : BaseView(app_impl, view_owner_request.Pass(), label),
       gl_context_owner_(mojo::ApplicationConnectorPtr::Create(
                             app_impl->CreateApplicationConnector())
                             .get()),