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diff --git a/layout/base/tests/test_transformed_scrolling_repaints_3.html b/layout/base/tests/test_transformed_scrolling_repaints_3.html
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+++ b/layout/base/tests/test_transformed_scrolling_repaints_3.html
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+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test that scaled elements with scrolled contents don't repaint unnecessarily when we scroll inside them</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<!-- Need a timeout here to allow paint unsuppression before we start the test -->
+<body>
+<pre id="test">
+<script type="application/javascript">
+SimpleTest.waitForExplicitFinish();
+
+SpecialPowers.pushPrefEnv(
+ {"set": [["layers.single-tile.enabled", false]]},
+ function() {
+ window.open("transformed_scrolling_repaints_3_window.html", "transformed_scrolling_repaints_3",
+ "chrome,width=350,height=450");
+ }
+);
+</script>
+</pre>
+</body>
+</html>