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/MediaTrackConstraintSet.webidl

@@ -0,0 +1,38 @@
+/* -*- 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://dev.w3.org/2011/webrtc/editor/getusermedia.html
+ */
+
+// These dictionaries need to be in a separate file from their use in unions
+// in MediaSreamTrack.webidl due to a webidl compiler limitation:
+//
+// TypeError: Dictionary contains a union that contains a dictionary in the same
+// WebIDL file.  This won't compile.  Move the inner dictionary to a different file.
+
+dictionary ConstrainLongRange {
+    long min;
+    long max;
+    long exact;
+    long ideal;
+};
+
+dictionary ConstrainDoubleRange {
+    double min;
+    double max;
+    double exact;
+    double ideal;
+};
+
+dictionary ConstrainBooleanParameters {
+    boolean exact;
+    boolean ideal;
+};
+
+dictionary ConstrainDOMStringParameters {
+    (DOMString or sequence<DOMString>) exact;
+    (DOMString or sequence<DOMString>) ideal;
+};