third_party/WebKit/LayoutTests/compositing/layer-creation/fixed-position-no-content-scroll-reason.html

   1 <!DOCTYPE html>
   2
   3 <html>
   4 <head>
   5 <style>
   6   .fixed {
   7     position: fixed;
   8     width: 50px;
   9     height: 50px;
  10     top: 10px;
  11     left: 10px;
  12     z-index: -1;
  13   }
  14 </style>
  15
  16 <script type="text/javascript">
  17   if (window.internals)
  18     window.internals.settings.setPreferCompositingToLCDTextEnabled(true);
  19
  20   if (window.testRunner) {
  21     testRunner.dumpAsText();
  22
  23     window.addEventListener("load", function() {
  24       document.getElementById("mainThreadScrollingReasons").innerText = window.internals.mainThreadScrollingReasons(document);
  25     }, false);
  26   }
  27 </script>
  28 </head>
  29
  30 <body>
  31 <div style="height: 1000px">
  32   Main thread scrolling reasons should be blank:
  33   <pre id="mainThreadScrollingReasons"></pre>
  34 </div>
  35 <div class="fixed"></div>
  36 </body>
  37 </html>