Remove get_attrs from TElement.

This should just be a helper.

components/script/layout_wrapper.rs

@@ -392,13 +392,6 @@ impl<'le> TElement for ServoLayoutElement<'le> {
             (*self.element.unsafe_get()).get_attr_val_for_layout(namespace, name)
         }
     }
-
-    #[inline]
-    fn get_attrs(&self, name: &Atom) -> Vec<&str> {
-        unsafe {
-            (*self.element.unsafe_get()).get_attr_vals_for_layout(name)
-        }
-    }
 }
 
 
@@ -561,7 +554,10 @@ impl<'le> ::selectors::Element for ServoLayoutElement<'le> {
                 self.get_attr(ns, name).map_or(false, |attr| test(attr))
             },
             NamespaceConstraint::Any => {
-                self.get_attrs(name).iter().any(|attr| test(*attr))
+                let attrs = unsafe {
+                    (*self.element.unsafe_get()).get_attr_vals_for_layout(name)
+                };
+                attrs.iter().any(|attr| test(*attr))
             }
         }
     }

components/style/dom.rs

@@ -208,7 +208,6 @@ pub trait TElement : Sized + Copy + Clone + ElementExt + PresentationalHintsSynt
     fn get_state(&self) -> ElementState;
 
     fn get_attr<'a>(&'a self, namespace: &Namespace, attr: &Atom) -> Option<&'a str>;
-    fn get_attrs<'a>(&'a self, attr: &Atom) -> Vec<&'a str>;
 
     /// Properly marks nodes as dirty in response to restyle hints.
     fn note_restyle_hint(&self, mut hint: RestyleHint) {

ports/geckolib/wrapper.rs

@@ -369,11 +369,6 @@ impl<'le> TElement for GeckoElement<'le> {
             reinterpret_string(ptr, length)
         }
     }
-
-    #[inline]
-    fn get_attrs<'a>(&'a self, _name: &Atom) -> Vec<&'a str> {
-        unimplemented!()
-    }
 }
 
 impl<'le> PresentationalHintsSynthetizer for GeckoElement<'le> {
@@ -519,7 +514,9 @@ impl<'le> ::selectors::Element for GeckoElement<'le> {
                 self.get_attr(ns, name).map_or(false, |attr| test(attr))
             },
             NamespaceConstraint::Any => {
-                self.get_attrs(name).iter().any(|attr| test(*attr))
+                // We should probably pass the atom into gecko and let it match
+                // against attributes across namespaces.
+                unimplemented!()
             }
         }
     }