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>
<iframe></iframe>
<script>
var iframe = document.getElementsByTagName("iframe")[0];
var doc = iframe.contentDocument;
doc.open("TEXT/PLAIN");
doc.write("<i>foo</i>");
doc.close();
</script>