Sync HTML element interfaces A-B with the spec

Source/core/html/HTMLAreaElement.idl

Index: Source/core/html/HTMLAreaElement.idl
diff --git a/Source/core/html/HTMLAreaElement.idl b/Source/core/html/HTMLAreaElement.idl
index 471e5835a6ff3c1c4af1620814bd384d1734dd2e..53c99555a05590c5e457d864d7c95a53bc2b912d 100644
--- a/Source/core/html/HTMLAreaElement.idl
+++ b/Source/core/html/HTMLAreaElement.idl
@@ -18,13 +18,20 @@
  * Boston, MA 02110-1301, USA.
  */
 
+// https://html.spec.whatwg.org/#htmlareaelement
+
 interface HTMLAreaElement : HTMLElement {
     [Reflect] attribute DOMString alt;
     [Reflect] attribute DOMString coords;
-    [Reflect] attribute boolean noHref;
-    [Reflect] attribute DOMString ping;
     [Reflect] attribute DOMString shape;
     [Reflect] attribute DOMString target;
+    // FIXME: ping should be a DOMSettableTokenList.
+    [Reflect] attribute DOMString ping;
+    // FIXME: download, rel, relList, hreflang and type are missing.
+
+    // obsolete members
+    // https://html.spec.whatwg.org/#HTMLAreaElement-partial
+    [Reflect] attribute boolean noHref;
 };
 
 HTMLAreaElement implements URLUtils;