Try to enable all webidls (#573)

* Try to enable all webidls

* Separate out unavailable webidl files by reason.

* Create record of fully tested WebIDL files

* Update notes to reflect new situation with web-idl

* Make a blank ident fail, disable the necessary widls.

It turns out that all the blank idents came from blank enum variants,
which is allowed in webidl apparently.

crates/web-sys/webidls/enabled/XPathExpression.webidl

@@ -0,0 +1,25 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/.
+ */
+
+interface XPathExpression {
+  // The result specifies a specific result object which may be reused and
+  // returned by this method. If this is specified as null or it's not an
+  // XPathResult object, a new result object will be constructed and returned.
+  [Throws]
+  XPathResult evaluate(Node contextNode,
+                       optional unsigned short type = 0  /* XPathResult.ANY_TYPE */,
+                       optional object? result = null);
+
+  // The result specifies a specific result object which may be reused and
+  // returned by this method. If this is specified as null or it's not an
+  // XPathResult object, a new result object will be constructed and returned.
+  [Throws, ChromeOnly]
+  XPathResult evaluateWithContext(Node contextNode,
+                                  unsigned long contextPosition,
+                                  unsigned long contextSize,
+                                  optional unsigned short type = 0  /* XPathResult.ANY_TYPE */,
+                                  optional object? result = null);
+};