run_upgrade_constructor

script::dom::customelementregistry

Function run_upgrade_constructor 

Source 
fn run_upgrade_constructor(
    definition: &CustomElementDefinition,
    element: &Element,
    can_gc: CanGc,
) -> ErrorResult
Expand description

https://html.spec.whatwg.org/multipage/#concept-upgrade-an-element Steps 9.1-9.4