title: iframes download font file again though it is downloaded in main doc
body: <p>I have main html file and one iframe tag in that. iframe contains whole another #document with all  and  tag.</p>
  
  <p>In body tag there are divs which uses fonts that downloaded when loading of the main document started. when i try to open the document of the iframe, in chrome, required font file is again downloads for the document inside the iframe.</p>
  
  <p>i dont want to download the font file for the iframe doc instead of using the same font file which is downloaded at the start of the main doc(if present). If required font is not dowloaded by the main document then only download the font file.</p>
  
  <p>If any server related changes requiered then let me know.</p>