Pseudo and non pseudo elements should return correct computed content value

third_party/WebKit/LayoutTests/fast/css/getComputedStyle/disallowed-url-serialization.html

 <script src="../../../resources/testharness.js"></script>
 <script src="../../../resources/testharnessreport.js"></script>
 <div id="target">
 <script>
 var testCases = [
   ['-webkit-box-reflect', 'below 0px url(\"chrome:\") 0 fill / auto / 0px stretch'],
   ['-webkit-mask-box-image-source', 'url("chrome:")'],
   ['-webkit-mask-image', 'url("chrome:")'],
   ['background-image', 'url("chrome:")'],
   ['border-image-source', 'url("chrome:")'],
-  ['content', 'url("chrome:")'],

[Timothy Loh, 2016/03/23 05:07:49]

Why delete this test case? It'd be better to update the test so this is still
covered.

[alancutter (OOO until 2018), 2016/03/23 05:30:30]

I wrote this test and consider this reasonable to remove. The code paths of
interest for this test are still being tested, many of these properties are
redundant with respect to our implementation.

[nainar, 2016/03/23 06:50:41]

Retaining changes as per above.

   ['list-style-image', 'url("chrome:")'],
   ['shape-outside', 'url("chrome:")'],
 ];
 
 test(() => {
   for ([property, value] of testCases) {
     target.style[property] = value;
   }
   var computedStyle = getComputedStyle(target);
   for ([property, value] of testCases) {
     assert_equals(computedStyle[property], value, property);
   }
 }, 'Disallowed URL protocols should serialise as their original URL strings');
 </script>