import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
150858 changed files with 23884658 additions and 0 deletions

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<!DOCTYPE html>
<style>
.x { position: absolute; color: red; }
.y { color: green; }
</style>
<div class=x>hello</div>
<script>
document.body.offsetHeight;
document.querySelector(".x").className = "y";
document.body.offsetHeight;
</script>