diff --git a/components/layout/incremental.rs b/components/layout/incremental.rs
index e3007511f8e..4e313f088bb 100644
--- a/components/layout/incremental.rs
+++ b/components/layout/incremental.rs
@@ -22,13 +22,8 @@ bitflags! {
     }
 }
 
-pub trait LayoutDamageComputation {
-    fn compute_layout_damage(self) -> SpecialRestyleDamage;
-    fn reflow_entire_document(self);
-}
-
-impl<'a> LayoutDamageComputation for &'a mut dyn Flow {
-    fn compute_layout_damage(self) -> SpecialRestyleDamage {
+impl dyn Flow {
+    pub fn compute_layout_damage(&mut self) -> SpecialRestyleDamage {
         let mut special_damage = SpecialRestyleDamage::empty();
         let is_absolutely_positioned = self
             .base()
@@ -91,7 +86,7 @@ impl<'a> LayoutDamageComputation for &'a mut dyn Flow {
         special_damage
     }
 
-    fn reflow_entire_document(self) {
+    pub fn reflow_entire_document(&mut self) {
         let self_base = self.mut_base();
         self_base
             .restyle_damage
diff --git a/components/layout_thread/lib.rs b/components/layout_thread/lib.rs
index aebfeebe440..d0c4cd9e4da 100644
--- a/components/layout_thread/lib.rs
+++ b/components/layout_thread/lib.rs
@@ -45,7 +45,7 @@ use layout::display_list::items::{OpaqueNode, WebRenderImageInfo};
 use layout::display_list::{IndexableText, ToLayout, WebRenderDisplayListConverter};
 use layout::flow::{Flow, GetBaseFlow, ImmutableFlowUtils, MutableOwnedFlowUtils};
 use layout::flow_ref::FlowRef;
-use layout::incremental::{LayoutDamageComputation, RelayoutMode, SpecialRestyleDamage};
+use layout::incremental::{RelayoutMode, SpecialRestyleDamage};
 use layout::layout_debug;
 use layout::parallel;
 use layout::query::{