Auto merge of #29727 - mrobinson:more-layout-dom-cleanup, r=jdm

More cleanup of the layout DOM wrappers

This PR includes two commits which continue to clean up the layout DOM wrappers.
 - in the first the unused `DangerousThreadSafeLayoutNode` trait is removed
 - in the second DOM-related code is combined into one source file in Layout 2020 and some traits are combined and removed.

---
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #29688
- [x] These changes fix #29722
- [x] These changes do not require tests because they do not change behavior.

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1 files changed, 1 insertions, 2 deletions

diff --git a/components/layout/query.rs b/components/layout/query.rs
index 98a3ec662fb..175ddb2679f 100644
--- a/components/layout/query.rs
+++ b/components/layout/query.rs
@@ -11,7 +11,6 @@ use crate::display_list::IndexableText;
 use crate::flow::{Flow, GetBaseFlow};
 use crate::fragment::{Fragment, FragmentBorderBoxIterator, FragmentFlags, SpecificFragmentInfo};
 use crate::inline::InlineFragmentNodeFlags;
-use crate::opaque_node::OpaqueNodeMethods;
 use crate::sequential;
 use crate::wrapper::LayoutNodeLayoutData;
 use app_units::Au;
@@ -1099,7 +1098,7 @@ pub fn process_offset_parent_query(
             let origin = node_offset_box.offset - parent_info.origin.to_vector();
             let size = node_offset_box.rectangle.size;
             OffsetParentResponse {
-                node_address: Some(parent_info.node_address.to_untrusted_node_address()),
+                node_address: Some(parent_info.node_address.into()),
                 rect: Rect::new(origin, size),
             }
         },