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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
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71
layout/reftests/invalidation/paintedlayer-recycling-3.html
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layout/reftests/invalidation/paintedlayer-recycling-3.html
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<!DOCTYPE html>
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<html lang="en" class="reftest-wait">
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<meta charset="utf-8">
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<title>Adding a new display item to the bottom of an existing PaintedLayer shouldn't cause the other items in that layer to change layers</title>
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<style>
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.content {
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box-sizing: border-box;
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width: 200px;
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height: 200px;
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border: 1px solid black;
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}
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.fixed {
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position: fixed;
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top: 20px;
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left: 140px;
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}
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.onTopOfFixed {
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position: absolute;
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top: 120px;
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left: 260px;
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}
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.reftest-no-paint {
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border-color: lime;
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}
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#aboutToBecomeVisible {
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left: 20px;
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}
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body {
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margin: 0;
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padding: 20px;
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height: 3000px;
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}
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</style>
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<div class="fixed content">
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<!--
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This layer is just there to force .onTopOfFixed into a PaintedLayer above
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the page background.
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-->
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</div>
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<div class="onTopOfFixed content" id="aboutToBecomeVisible" style="visibility: hidden">
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<!--
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This item starts out invisible but should end up in the same layer as the other
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.onTopOfFixed item, once it's visible.
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-->
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</div>
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<div class="onTopOfFixed reftest-no-paint content">
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<!--
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This item shouldn't repaint when the other .onTopOfFixed item becomes visible.
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-->
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</div>
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<script>
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function doTest() {
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document.querySelector("#aboutToBecomeVisible").style.visibility = "visible";
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document.documentElement.removeAttribute("class");
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}
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document.addEventListener("MozReftestInvalidate", doTest, false);
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</script>
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