broken-mask.html | Explore in Territory

<!doctype html>
<style>
#mask {
  -webkit-mask-image: url(broken.png);
  background: red;
  height: 100px;
  width: 100px;
  will-change: transform;
}
</style>
Passes if there is no red.
<div id=mask></div>

chromium/third_party/blink/web_tests/compositing/masks/broken-mask.html