author Xianzhu Wang <>
Tue, 05 Mar 2019 12:18:01 +0000
changeset 464575 4325ba7b38576495a78289c2a8f4dff391922e66
parent 304053 39dabd617b129f7c8de7c10bff048406fda44663
permissions -rw-r--r--
Bug 1529059 [wpt PR 15420] - [BlinkGenPropertyTrees] Initiailize double_sided of synthetic effect, a=testonly Automatic update from web-platform-tests [BlinkGenPropertyTrees] Initiailize double_sided of synthetic effect Previously synthetic effects always had double_sided==false, causing the layer disappear when the backface was facing forward. Bug: 928190 Change-Id: I35534b40346d5c5918bc99c00a4ca6b4e3b68796 Reviewed-on: Reviewed-by: Philip Rogers <> Commit-Queue: Xianzhu Wang <> Cr-Commit-Position: refs/heads/master@{#632764} -- wpt-commits: a89467050deaf1dcbd9140a2f0670b1b85e518ee wpt-pr: 15420

<!DOCTYPE html>
<html lang="en" reftest-async-scroll>
<meta charset="utf-8">
<title>Make sure the scrolled layer is not invalidated when you scroll all the way to the bottom</title>


body {
  margin: 0;

.scrollbox {
  margin: 50px;
  width: 200px;
  height: 200px;
  overflow: auto;

.scrolled-contents {
  height: 150.2px;
  padding-top: 150px;

.reftest-no-paint {
  margin: 0 20px;
  border: 1px solid blue;
  height: 25px;



<div class="scrollbox"
     reftest-displayport-x="0" reftest-displayport-y="0"
     reftest-displayport-w="200" reftest-displayport-h="200"
     reftest-async-scroll-x="0" reftest-async-scroll-y="0">
  <div class="scrolled-contents">
    <div class="reftest-no-paint">
      <!-- This element has the magic "reftest-no-paint" class which
           constitutes the actual test here. -->


var scrollbox = document.querySelector(".scrollbox");
scrollbox.scrollTop = 2;
scrollbox.scrollTop = 1;
scrollbox.scrollTop = 0;

function doTest() {
  scrollbox.scrollTop = 999;
document.addEventListener("MozReftestInvalidate", doTest);