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/CharacterData.webidl

@@ -0,0 +1,31 @@
+/* -*- 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/.
+ *
+ * The origin of this IDL file is
+ * http://dom.spec.whatwg.org/#characterdata
+ *
+ * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
+ * liability, trademark and document use rules apply.
+ */
+
+interface CharacterData : Node {
+  [TreatNullAs=EmptyString, Pure, SetterThrows]
+  attribute DOMString data;
+  [Pure]
+  readonly attribute unsigned long length;
+  [Throws]
+  DOMString substringData(unsigned long offset, unsigned long count);
+  [Throws]
+  void appendData(DOMString data);
+  [Throws]
+  void insertData(unsigned long offset, DOMString data);
+  [Throws]
+  void deleteData(unsigned long offset, unsigned long count);
+  [Throws]
+  void replaceData(unsigned long offset, unsigned long count, DOMString data);
+};
+
+CharacterData implements ChildNode;
+CharacterData implements NonDocumentTypeChildNode;