Auto merge of #22743 - ferjm:shadowdom, r=emilio

Partial ShadowDOM support

This is just an early WIP, not to take it very seriously yet.

- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [x] These changes fix #22719
- [x] There are tests for these changes

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1 files changed, 2 insertions, 2 deletions

diff --git a/components/script/webdriver_handlers.rs b/components/script/webdriver_handlers.rs
index a3c143a4faa..ee373126513 100644
--- a/components/script/webdriver_handlers.rs
+++ b/components/script/webdriver_handlers.rs
@@ -22,7 +22,7 @@ use crate::dom::htmlelement::HTMLElement;
 use crate::dom::htmliframeelement::HTMLIFrameElement;
 use crate::dom::htmlinputelement::HTMLInputElement;
 use crate::dom::htmloptionelement::HTMLOptionElement;
-use crate::dom::node::{window_from_node, Node};
+use crate::dom::node::{window_from_node, Node, ShadowIncluding};
 use crate::script_thread::Documents;
 use cookie::Cookie;
 use euclid::{Point2D, Rect, Size2D};
@@ -50,7 +50,7 @@ fn find_node_by_unique_id(
     documents.find_document(pipeline).and_then(|document| {
         document
             .upcast::<Node>()
-            .traverse_preorder()
+            .traverse_preorder(ShadowIncluding::Yes)
             .find(|candidate| candidate.unique_id() == node_id)
     })
 }