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/CharacterData.webidl

@@ -0,0 +1,28 @@
+/* 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/. */
+/*
+ * The origin of this IDL file is
+ * https://dom.spec.whatwg.org/#characterdata
+ *
+ * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
+ * liability, trademark and document use rules apply.
+ */
+
+[Exposed=Window, Abstract]
+interface CharacterData : Node {
+  [Pure] attribute [LegacyNullToEmptyString] DOMString data;
+  [Pure] readonly attribute unsigned long length;
+  [Pure, Throws]
+  DOMString substringData(unsigned long offset, unsigned long count);
+  undefined appendData(DOMString data);
+  [Throws]
+  undefined insertData(unsigned long offset, DOMString data);
+  [Throws]
+  undefined deleteData(unsigned long offset, unsigned long count);
+  [Throws]
+  undefined replaceData(unsigned long offset, unsigned long count, DOMString data);
+};
+
+CharacterData includes ChildNode;
+CharacterData includes NonDocumentTypeChildNode;