Remove many long ugly lists of imports of HTML element types. They can now be obtained via dom::types::*, which is autogenerated.

src/components/script/dom/htmlspanelement.rs

@@ -0,0 +1,9 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use dom::htmlelement::HTMLElement;
+
+pub struct HTMLSpanElement {
+    parent: HTMLElement
+}