import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

layout/reftests/svg/dynamic-opacity-property-01.svg

@@ -0,0 +1,25 @@
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg" class="reftest-wait">
+
+  <title>Test repainting for opacity property changes</title>
+
+  <script>
+
+function doTest() {
+  document.getElementById("r").style.opacity = 1;
+  document.documentElement.removeAttribute("class");
+}
+
+document.addEventListener("MozReftestInvalidate", doTest, false);
+setTimeout(doTest, 4000); // fallback for running outside reftest
+
+  </script>
+
+  <rect width="100%" height="100%" fill="lime"/>
+  <rect width="100" height="100" fill="red"/>
+  <rect id="r" width="100" height="100" fill="lime" style="opacity:0.5"/>
+
+</svg>