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chromium/third_party/blink/web_tests/external/wpt/css/css-will-change/will-change-transform-image.html 

<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-will-change/#will-change">
<link rel="match" href="will-change-transform-image-ref.html">
<img style="padding: 100px; will-change: transform" src="../../images/green-256x256.png">