title: PerformanceResourceTiming transferSize not working in chrome
body: <p>PerformanceResourceTiming.transferSize not working in chrome but works as expected in firefox</p>
  <p>Steps to reproduce the issue in both browser</p>
  <ol>
  <li>Goto <a href="https://sachin7desai7.github.io/" rel="nofollow noreferrer">https://sachin7desai7.github.io/</a> it will display the number of java script loaded on the page which are not from browser cache</li>
  <li>hit 'F5' to reload the page , now the browser should display a different number from step 1 because browser cache would serve the java script files</li>
  </ol>
  <p>The functionality works as expected in Firefox but not in Chrome.
  Source code can be found at <a href="https://github.com/sachin7desai7/sachin7desai7.github.io/blob/main/index.html" rel="nofollow noreferrer">https://github.com/sachin7desai7/sachin7desai7.github.io/blob/main/index.html</a></p>