diff --git a/components/script/dom/htmliframeelement.rs b/components/script/dom/htmliframeelement.rs
index 16c5c1433b6..7b8c89bebf9 100644
--- a/components/script/dom/htmliframeelement.rs
+++ b/components/script/dom/htmliframeelement.rs
@@ -480,27 +480,27 @@ impl HTMLIFrameElement {
 }
 
 pub trait HTMLIFrameElementLayoutMethods {
-    fn pipeline_id(&self) -> Option<PipelineId>;
-    fn browsing_context_id(&self) -> Option<BrowsingContextId>;
-    fn get_width(&self) -> LengthOrPercentageOrAuto;
-    fn get_height(&self) -> LengthOrPercentageOrAuto;
+    fn pipeline_id(self) -> Option<PipelineId>;
+    fn browsing_context_id(self) -> Option<BrowsingContextId>;
+    fn get_width(self) -> LengthOrPercentageOrAuto;
+    fn get_height(self) -> LengthOrPercentageOrAuto;
 }
 
 impl HTMLIFrameElementLayoutMethods for LayoutDom<'_, HTMLIFrameElement> {
     #[inline]
     #[allow(unsafe_code)]
-    fn pipeline_id(&self) -> Option<PipelineId> {
+    fn pipeline_id(self) -> Option<PipelineId> {
         unsafe { (*self.unsafe_get()).pipeline_id.get() }
     }
 
     #[inline]
     #[allow(unsafe_code)]
-    fn browsing_context_id(&self) -> Option<BrowsingContextId> {
+    fn browsing_context_id(self) -> Option<BrowsingContextId> {
         unsafe { (*self.unsafe_get()).browsing_context_id.get() }
     }
 
     #[allow(unsafe_code)]
-    fn get_width(&self) -> LengthOrPercentageOrAuto {
+    fn get_width(self) -> LengthOrPercentageOrAuto {
         unsafe {
             (*self.upcast::<Element>().unsafe_get())
                 .get_attr_for_layout(&ns!(), &local_name!("width"))
@@ -511,7 +511,7 @@ impl HTMLIFrameElementLayoutMethods for LayoutDom<'_, HTMLIFrameElement> {
     }
 
     #[allow(unsafe_code)]
-    fn get_height(&self) -> LengthOrPercentageOrAuto {
+    fn get_height(self) -> LengthOrPercentageOrAuto {
         unsafe {
             (*self.upcast::<Element>().unsafe_get())
                 .get_attr_for_layout(&ns!(), &local_name!("height"))