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chromium
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chromium/third_party/blink/web_tests/http/tests/inspector-protocol/resources/basic.html 

<html>
  <head>
    <link rel="preload" href="inspector-protocol/resources/style.css" as="style"></link>
  </head>
  <body>
    <script src="inspector-protocol/resources/empty.js"></script>
    <img src="inspector-protocol/resources/square.png" fetchpriority="high">
  </body>
</html>