Codebase Browser
chromium
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chromium/chrome/test/data/navigation_predictor/anchors_same_href.html 

<html>
  <head>
  </head>
  <body>
    <a id="google" href="https://google.com">Google</a>
    <a id="google2" href="https://google.com">Google2</a>
    <a id="imageSameHref" href="https://google.com"><img height="1" width="1"></a>
    <a id="diffHref" href="https://example.com">diff</a>
  </body>
</html>