import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

layout/reftests/svg/smil/anim-defs-gradient-property.svg

@@ -0,0 +1,25 @@
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg"
+     xmlns:xlink="http://www.w3.org/1999/xlink"
+     class="reftest-wait">
+
+  <title>Test animation of gradient property in 'defs' element</title>
+  <script xlink:href="smil-util.js" type="text/javascript"/>
+
+  <rect fill="url(#gradient)" width="100%" height="100%"/>
+  <defs>
+    <linearGradient id="gradient">
+      <stop>
+        <animate attributeName="stop-color"
+                 values="red;lime"
+                 calcMode="discrete"
+                 dur="100s"/>
+      </stop>
+    </linearGradient>
+  </defs>
+
+  <script>
+    window.addEventListener("MozReftestInvalidate", function() {
+      setTimeAndWaitToSnapshot(49.9, 0.1);
+    });
+  </script>
+</svg>