third_party/WebKit/LayoutTests/compositing/squashing/repaint-via-layout-offset.html

   1 <!DOCTYPE html>
   2 <script src="../../fast/repaint/resources/text-based-repaint.js"></script>
   3 <style>
   4 #container {
   5   position: absolute;
   6   z-index: 0;
   7   left: 50px;
   8   top: 50px;
   9 }
  10
  11 .child {
  12   position: absolute;
  13   width: 40px;
  14   height: 40px;
  15   background-color: red;
  16 }
  17
  18 .embiggen {
  19   width: 50px;
  20   height: 50px;
  21   background-color: green;
  22 }
  23 </style>
  24 <div style="width:200px; height:200px; transform: translateZ(0px); background-color: lightblue"></div>
  25 <div id="container">
  26   <span class="child"></span>
  27   <span class="child"></span>
  28 </div>
  29 <script>
  30 function repaintTest() {
  31     document.querySelectorAll('.child')[1].classList.add('embiggen');
  32 }
  33 runRepaintTest();
  34 </script>