import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

layout/reftests/css-blending/blend-canvas-ref.html

@@ -0,0 +1,28 @@
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html>
+<script type="text/javascript">
+window.onload = function() {
+  var c = document.getElementById("b");
+  var ctx = c.getContext("2d");
+  ctx.fillStyle = "rgb(0,0,0)";
+  ctx.fillRect(0,0,100,100);
+}
+</script>
+<style>
+#a {
+  width: 200px;
+  height: 200px;
+  background-color: rgb(0,255,0);
+}
+#b {
+  width: 100px;
+  height: 100px;
+}
+</style>
+<div id="a">
+  <canvas width="100" height="100" id="b"/>
+</div>
+</html>