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/htmloptionscollection.rs b/components/script/dom/htmloptionscollection.rs
index d025f827e70..0820b2999b0 100644
--- a/components/script/dom/htmloptionscollection.rs
+++ b/components/script/dom/htmloptionscollection.rs
@@ -24,7 +24,7 @@ use crate::dom::element::Element;
 use crate::dom::htmlcollection::{CollectionFilter, HTMLCollection};
 use crate::dom::htmloptionelement::HTMLOptionElement;
 use crate::dom::htmlselectelement::HTMLSelectElement;
-use crate::dom::node::{document_from_node, Node};
+use crate::dom::node::{Node, NodeTraits};
 use crate::dom::window::Window;
 use crate::script_runtime::CanGc;
 
@@ -57,7 +57,7 @@ impl HTMLOptionsCollection {
 
     fn add_new_elements(&self, count: u32, can_gc: CanGc) -> ErrorResult {
         let root = self.upcast().root_node();
-        let document = document_from_node(&*root);
+        let document = root.owner_document();
 
         for _ in 0..count {
             let element =