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chromium
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chromium/third_party/blink/web_tests/images/missing-image-border-zoom.html 

<!DOCTYPE html>
<style>
  body {
    zoom: 200%;
  }
</style>
<img src="https://www.example.com/doesntexist.png" style="width: 32px; height: 32px; background: orange;"/></p>