1 files changed, 8 insertions, 22 deletions
diff --git a/components/script/dom/htmltablesectionelement.rs b/components/script/dom/htmltablesectionelement.rs
index 5922ffd4b42..137d25541fa 100644
--- a/components/script/dom/htmltablesectionelement.rs
+++ b/components/script/dom/htmltablesectionelement.rs
@@ -7,7 +7,7 @@ use dom::bindings::codegen::Bindings::HTMLTableSectionElementBinding;
 use dom::bindings::codegen::InheritTypes::{HTMLElementCast, HTMLTableSectionElementDerived};
 use dom::bindings::js::Root;
 use dom::document::Document;
-use dom::element::ElementTypeId;
+use dom::element::{AttributeMutation, ElementTypeId};
 use dom::eventtarget::{EventTarget, EventTargetTypeId};
 use dom::htmlelement::{HTMLElement, HTMLElementTypeId};
 use dom::node::{Node, NodeTypeId};
@@ -61,29 +61,15 @@ impl VirtualMethods for HTMLTableSectionElement {
         Some(htmlelement as &VirtualMethods)
     }
 
-    fn after_set_attr(&self, attr: &Attr) {
-        if let Some(ref s) = self.super_type() {
-            s.after_set_attr(attr);
-        }
-
-        match attr.local_name() {
-            &atom!("bgcolor") => {
-                self.background_color.set(str::parse_legacy_color(&attr.value()).ok());
-            },
-            _ => ()
-        }
-    }
-
-    fn before_remove_attr(&self, attr: &Attr) {
-        if let Some(ref s) = self.super_type() {
-            s.before_remove_attr(attr);
-        }
-
+    fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
+        self.super_type().unwrap().attribute_mutated(attr, mutation);
         match attr.local_name() {
-            &atom!("bgcolor") => {
-                self.background_color.set(None);
+            &atom!(bgcolor) => {
+                self.background_color.set(mutation.new_value(attr).and_then(|value| {
+                    str::parse_legacy_color(&value).ok()
+                }));
             },
-            _ => ()
+            _ => {},
         }
     }
 }