Sync the HTMLM*Element interfaces with the spec

Source/core/html/HTMLMetaElement.idl

Index: Source/core/html/HTMLMetaElement.idl
diff --git a/Source/core/html/HTMLMetaElement.idl b/Source/core/html/HTMLMetaElement.idl
index 41d369e22ca5129df62fea8fb45e6305fd66fe26..d4be1f86ba3c0ff196ac25747ff820821fb417b2 100644
--- a/Source/core/html/HTMLMetaElement.idl
+++ b/Source/core/html/HTMLMetaElement.idl
@@ -17,9 +17,14 @@
  * Boston, MA 02110-1301, USA.
  */
 
+// https://html.spec.whatwg.org/#htmlmetaelement
+
 interface HTMLMetaElement : HTMLElement {
-    [Reflect] attribute DOMString content;
-    [Reflect=http_equiv] attribute DOMString httpEquiv;
     [Reflect] attribute DOMString name;
+    [Reflect=http_equiv] attribute DOMString httpEquiv;
+    [Reflect] attribute DOMString content;
+
+    // obsolete members
+    // https://html.spec.whatwg.org/#HTMLMetaElement-partial
     [Reflect] attribute DOMString scheme;
 };