LibWeb: Throw error when calling drawImage() with a broken image

Author: https://github.com/tcl3
Commit: c4e56cc845
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6541
Reviewed-by: https://github.com/gmta ✅

Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp

@@ -23,6 +23,7 @@
 #include <LibWeb/HTML/HTMLImageElement.h>
 #include <LibWeb/HTML/ImageBitmap.h>
 #include <LibWeb/HTML/ImageData.h>
+#include <LibWeb/HTML/ImageRequest.h>
 #include <LibWeb/HTML/Path2D.h>
 #include <LibWeb/HTML/TextMetrics.h>
 #include <LibWeb/HTML/TraversableNavigable.h>
@@ -802,7 +803,9 @@ WebIDL::ExceptionOr<CanvasImageSourceUsability> check_usability_of_image(CanvasI
     auto usability = TRY(image.visit(
         // HTMLOrSVGImageElement
         [](GC::Root<HTMLImageElement> const& image_element) -> WebIDL::ExceptionOr<Optional<CanvasImageSourceUsability>> {
-            // FIXME: If image's current request's state is broken, then throw an "InvalidStateError" DOMException.
+            // If image's current request's state is broken, then throw an "InvalidStateError" DOMException.
+            if (image_element->current_request().state() == HTML::ImageRequest::State::Broken)
+                return WebIDL::InvalidStateError::create(image_element->realm(), "Image element state is broken"_utf16);
 
             // If image is not fully decodable, then return bad.
             if (!image_element->immutable_bitmap())