script: Expose `NodeTraits::owner_global` / `Window::as_global_scope` (#34843)

Expose two new helpers and start using them as much as possible.

- `NodeTraits::owner_global`: which gets the `GlobalScope` that currenty
 owns a `Node`. This may be different than `.global()` in the case that
 the `Node` was adopted by a different `Document`.
- `Window::as_global_scope`: A helper to avoid having to cast so much
  when treating a `Window` like a `GlobalScope`.

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 644bce31ea5..70a57749add 100644
--- a/components/script/dom/htmldialogelement.rs
+++ b/components/script/dom/htmldialogelement.rs
@@ -102,7 +102,6 @@ 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 = self.owner_window();
 
         // Step 1 & 2
         if element
@@ -120,7 +119,8 @@ impl HTMLDialogElementMethods<crate::DomTypeHolder> for HTMLDialogElement {
         // TODO: Step 4 implement pending dialog stack removal
 
         // Step 5
-        win.task_manager()
+        self.owner_global()
+            .task_manager()
             .dom_manipulation_task_source()
             .queue_simple_event(target, atom!("close"));
     }