script: Expose node helpers as `NodeTraits` and give more descriptive names (#34832)

This puts a few commonly used `Node` helpers into a trait (`NodeTraits`)
and gives them more descriptive names and documentation. The renames:

- `document_from_node` -> `NodeTraits::owner_document`
- `window_from_node` -> `NodeTraits::owner_window`
- `stylesheets_owner_from_node<T:` -> `NodeTraits::stylesheet_list_owner`
- `containing_shadow_root` -> `NodeTraits::containing_shadow_root`

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/components/script/dom/htmldialogelement.rs b/components/script/dom/htmldialogelement.rs
index 860072566d7..e556e9ed99b 100644
--- a/components/script/dom/htmldialogelement.rs
+++ b/components/script/dom/htmldialogelement.rs
@@ -15,7 +15,7 @@ use crate::dom::document::Document;
 use crate::dom::element::Element;
 use crate::dom::eventtarget::EventTarget;
 use crate::dom::htmlelement::HTMLElement;
-use crate::dom::node::{window_from_node, Node};
+use crate::dom::node::{Node, NodeTraits};
 use crate::script_runtime::CanGc;
 
 #[dom_struct]
@@ -102,7 +102,7 @@ impl HTMLDialogElementMethods<crate::DomTypeHolder> for HTMLDialogElement {
     fn Close(&self, return_value: Option<DOMString>) {
         let element = self.upcast::<Element>();
         let target = self.upcast::<EventTarget>();
-        let win = window_from_node(self);
+        let win = self.owner_window();
 
         // Step 1 & 2
         if element