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+<!DOCTYPE html>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!--
+     This testcase ensures that we repaint correctly when "object-fit" is
+     adjusted on a replaced element with SVG content.  We start with
+     "object-fit: contain", which lets some of the red background show through
+     as we fit the SVG's square aspect-ratio into the wide rectangular
+     container elements. We then change dynamically to "object-fit: cover",
+     which should scale our SVG content to cover each replaced element's
+     content-box. No red should ultimately be visible in the reftest snapshot.
+-->
+<html class="reftest-wait">
+  <head>
+    <meta charset="utf-8">
+    <style type="text/css">
+      embed, img, object, video {
+        object-fit: contain;
+        background: red;
+        width: 50px;
+        height: 30px;
+      }
+    </style>
+    <script>
+      function go() {
+        var elemsToTweak = ["embed", "img", "object", "video"];
+        elemsToTweak.forEach(tweakElemObjectFit);
+        document.documentElement.removeAttribute("class");
+      }
+      function tweakElemObjectFit(tagName) {
+        var elem = document.getElementsByTagName(tagName)[0];
+        elem.style.objectFit = "cover";
+      }
+      document.addEventListener("MozReftestInvalidate", go);
+    </script>
+  </head>
+  <body>
+    <embed src="500.svg">
+    <img src="500.svg">
+    <object data="500.svg"></object>
+    <video poster="500.svg"></video>
+  </body>
+</html>