third_party/WebKit/LayoutTests/fast/frames/content-opacity-1.html

   1 <div style="float: left; background-image: url(../replaced/resources/1x1-green.png)">
   2     <iframe src="data:text/html,
   3         <body style='background-color: rgba(0, 0, 0, 0.5)'>
   4         </body>
   5     "></iframe>
   6 </div>