script: Move code generation and webidl files to new script_bindings crate. (#35157)

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

components/script_bindings/webidls/XPathEvaluator.webidl

@@ -0,0 +1,30 @@
+/* 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 https://mozilla.org/MPL/2.0/. */
+
+// https://dom.spec.whatwg.org/#mixin-xpathevaluatorbase
+interface mixin XPathEvaluatorBase {
+  [NewObject, Throws, Pref="dom_xpath_enabled"] XPathExpression createExpression(
+    DOMString expression,
+    optional XPathNSResolver? resolver = null
+  );
+  Node createNSResolver(Node nodeResolver); // legacy
+  // XPathResult.ANY_TYPE = 0
+  [Throws, Pref="dom_xpath_enabled"] XPathResult evaluate(
+    DOMString expression,
+    Node contextNode,
+    optional XPathNSResolver? resolver = null,
+    optional unsigned short type = 0,
+    optional XPathResult? result = null
+  );
+};
+
+Document includes XPathEvaluatorBase;
+
+// https://dom.spec.whatwg.org/#interface-xpathevaluator
+[Exposed=Window, Pref="dom_xpath_enabled"]
+interface XPathEvaluator {
+  constructor();
+};
+
+XPathEvaluator includes XPathEvaluatorBase;