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diff --git a/layout/reftests/border-radius/intersecting-clipping-1-refc.html b/layout/reftests/border-radius/intersecting-clipping-1-refc.html
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+++ b/layout/reftests/border-radius/intersecting-clipping-1-refc.html
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+<!DOCTYPE HTML>
+<title>Test for clipping of border-radius</title>
+<style>
+#contain {
+  width: 200px;
+  height: 100px;
+  position: relative;
+}
+#contain > div {
+  overflow: hidden;
+  width: 200px;
+  height: 100px;
+  border-radius: 50px / 20px;
+}
+#contain > div > canvas {
+  border-radius: 20px / 40px;
+}
+
+#contain > div.spot {
+  position: absolute;
+  height: 1px;
+  width: 1px;
+}
+
+</style>
+<div id="contain">
+<div><canvas id="canvas" height="100" width="200"></canvas></div>
+<script>
+var canvas = document.getElementById("canvas");
+var cx = canvas.getContext("2d");
+cx.fillStyle="lime";
+cx.fillRect(0, 0, 200, 100);
+</script>
+
+<!--
+This is just like the test, except we'll add a bunch of spots in various
+places that should match the background of what they're on.
+-->
+
+<div class="spot" style="top: 1px; left: 15px; background: white"></div>
+<div class="spot" style="top: 14px; left: 2px; background: white"></div>
+<div class="spot" style="top: 18px; left: 0px; background: white"></div>
+<div class="spot" style="top: 82px; left: 198px; background: white"></div>
+<div class="spot" style="top: 97px; left: 180px; background: white"></div>
+<div class="spot" style="top: 2px; left: 180px; background: white"></div>
+<div class="spot" style="top: 17px; left: 198px; background: white"></div>
+<div class="spot" style="top: 97px; left: 19px; background: white"></div>
+<div class="spot" style="top: 82px; left: 1px; background: white"></div>
+
+<div class="spot" style="top: 10px; left: 8px; background: lime"></div>
+<div class="spot" style="top: 89px; left: 8px; background: lime"></div>
+<div class="spot" style="top: 10px; left: 191px; background: lime"></div>
+<div class="spot" style="top: 89px; left: 191px; background: lime"></div>
+
+</div>