Kill ServoLayoutElement::note_dirty_descendant

There is no need to set the dirty descendants flag unsafely from the layout side
for elements with pending restyles, we can do that on the DOM side when draining
the restyles from the Document.

1 files changed, 0 insertions, 15 deletions

diff --git a/components/layout_thread_2020/dom_wrapper.rs b/components/layout_thread_2020/dom_wrapper.rs
index 5a722cd82b8..f3199dffc80 100644
--- a/components/layout_thread_2020/dom_wrapper.rs
+++ b/components/layout_thread_2020/dom_wrapper.rs
@@ -719,21 +719,6 @@ impl<'le> ServoLayoutElement<'le> {
     pub unsafe fn set_has_snapshot(&self) {
         self.as_node().node.set_flag(NodeFlags::HAS_SNAPSHOT, true);
     }
-
-    pub unsafe fn note_dirty_descendant(&self) {
-        use selectors::Element;
-
-        let mut current = Some(*self);
-        while let Some(el) = current {
-            // FIXME(bholley): Ideally we'd have the invariant that any element
-            // with has_dirty_descendants also has the bit set on all its
-            // ancestors.  However, there are currently some corner-cases where
-            // we get that wrong.  I have in-flight patches to fix all this
-            // stuff up, so we just always propagate this bit for now.
-            el.set_dirty_descendants();
-            current = el.parent_element();
-        }
-    }
 }
 
 fn as_element<'dom>(node: LayoutDom<'dom, Node>) -> Option<ServoLayoutElement<'dom>> {