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/HTMLCanvasElement.webidl

@@ -0,0 +1,36 @@
+/* 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://html.spec.whatwg.org/multipage/#htmlcanvaselement
+typedef (CanvasRenderingContext2D
+  or WebGLRenderingContext
+  or WebGL2RenderingContext
+  or GPUCanvasContext) RenderingContext;
+
+[Exposed=Window]
+interface HTMLCanvasElement : HTMLElement {
+  [HTMLConstructor] constructor();
+
+  [CEReactions, Pure, SetterThrows] attribute unsigned long width;
+  [CEReactions, Pure, SetterThrows] attribute unsigned long height;
+
+  [Throws]
+  RenderingContext? getContext(DOMString contextId, optional any options = null);
+
+  [Throws]
+  USVString toDataURL(optional DOMString type = "image/png", optional any quality);
+
+  [Throws]
+  undefined toBlob(BlobCallback callback, optional DOMString type = "image/png", optional any quality);
+
+  [Throws]
+  OffscreenCanvas transferControlToOffscreen();
+};
+
+partial interface HTMLCanvasElement {
+    [Pref="dom_canvas_capture_enabled"]
+    MediaStream captureStream (optional double frameRequestRate);
+};
+
+callback BlobCallback = undefined(Blob? blob);