nested_frameset.html | Explore in Territory

<!DOCTYPE html>
<html>
  <head>
    <title>HTML Nested Frames</title>
  </head>
  <frameset rows="*,*">
    <frame src="page_test.html" name="first_frame" id="1Frame"/>
    <frameset cols="*,*,*">
      <frame src="link_nav.html" name="second_frame" id="2Frame"/>
      <frame src="console_log.html" name="third_frame"/>
      <frameset rows="*,*">
        <frame src="nested.html" name="fourth_frame"/>
        <frame src="subpage_linknav.html" name="fifth_frame"/>
      </frameset>
    </frameset>
  </frameset>
</html>

chromium/chrome/test/data/chromedriver/nested_frameset.html