https://github.com/web-platform-tests/wpt
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Tip revision: 03b7db51f21ce2a157454020bb46301b825152a5 authored by Alex Moshchuk on 13 April 2018, 23:12:06 UTC
Reland 2: Use PostTask to schedule cross-process postMessage forwarding.
Tip revision: 03b7db5
supported-in-source-type.html
<!DOCTYPE html>
<title>Animated PNG MIME type (image/apng) is recognized by &lt;source type></title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
function resolveUrl(relativeUrl) {
  var a = document.createElement('a');
  a.href = relativeUrl;
  return a.href;
}

async_test(t => {
  window.onload = t.step_func_done(() => {
    let image = document.querySelector('img');
    let apngSrc = document.querySelector('source');
    assert_equals(image.currentSrc, resolveUrl(apngSrc.srcset));
  });
});
</script>
<picture>
  <source srcset="/images/anim-gr.png" type="image/apng">
  <img src="/images/anim-gr.gif" style="visibility: hidden">
</picture>
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