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/DOMParser.webidl

@@ -0,0 +1,41 @@
+/* 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://domparsing.spec.whatwg.org/#the-domparser-interface
+ */
+
+// invalid widl
+// interface Principal;
+// interface URI;
+// interface InputStream;
+
+enum SupportedType {
+  "text/html",
+  "text/xml",
+  "application/xml",
+  "application/xhtml+xml",
+  "image/svg+xml"
+};
+
+// the latter is Mozilla-specific
+[Constructor]
+interface DOMParser {
+  [NewObject, Throws]
+  Document parseFromString(DOMString str, SupportedType type);
+
+  // Mozilla-specific stuff
+  [NewObject, Throws, ChromeOnly]
+  Document parseFromBuffer(sequence<octet> buf, SupportedType type);
+  [NewObject, Throws, ChromeOnly]
+  Document parseFromBuffer(Uint8Array buf, SupportedType type);
+  [NewObject, Throws, ChromeOnly]
+  Document parseFromStream(InputStream stream, DOMString? charset,
+                           long contentLength, SupportedType type);
+  // Can be used to allow a DOMParser to parse XUL/XBL no matter what
+  // principal it's using for the document.
+  [ChromeOnly]
+  void forceEnableXULXBL();
+};
+