[wpt] Test parsing unquoted urls inside url() with modifiers

It seems like none of the current WPTs seem to cover enforcing:
"Note: A <url> that is either unquoted or not wrapped in url() notation
cannot accept any <url-modifier>s."
- https://drafts.csswg.org/css-values-4/#url-modifiers

The definition itself also confirms this:
 <url()> = url( <string> <url-modifier>* ) | <url-token>

Let's fix that.

Bug: 435625756
Change-Id: I3946817c7d1d329938118076c971d3f553d6f3b5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7762048
Reviewed-by: Fredrik Söderquist <[email protected]>
Commit-Queue: jj <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1615119}

Author: dumbmoron

css/css-values/urls/url-request-modifiers-invalid.sub.html

@@ -42,4 +42,11 @@
 test_invalid_value('background-image', 'url("http://{{hosts[][]}}:{{ports[http][0]}}/css/support/1x1-green.png" crossorigin(anonymous))');
 test_invalid_value('background-image', 'url("http://{{hosts[][]}}:{{ports[http][0]}}/css/support/1x1-green.png" referrerpolicy(no-referrer))');
 
+// "A <url> that is either unquoted or not wrapped in url() notation
+// cannot accept any <url-modifier>s."
+// https://drafts.csswg.org/css-values-4/#url-modifiers
+test_invalid_value('background-image', 'url(http://{{hosts[][]}}:{{ports[http][0]}}/css/support/1x1-green.png cross-origin(anonymous))');
+test_invalid_value('background-image', 'url(http://{{hosts[][]}}:{{ports[http][0]}}/css/support/1x1-green.png integrity("sha384-foobar"))');
+test_invalid_value('background-image', 'url(http://{{hosts[][]}}:{{ports[http][0]}}/css/support/1x1-green.png referrer-policy(no-referrer))');
+
 </script>