<div dir="ltr">Yes, JS is enabled in the pages loaded by the background thumbnailing service (with JS disabled the thumbnails would likely not be very representative in a lot of cases).<br><br>Gavin<br></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Tue, Jul 30, 2013 at 5:05 PM, Tom Schuster <span dir="ltr"><<a href="mailto:tom@schuster.me" target="_blank">tom@schuster.me</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Do we run JS code in these? I can imagine all sorts of things that<br>
would cause a crash if JS code can invoke random dom apis. I however<br>
very happy that we are testing <browser remote=true> in a limited<br>
fashion with this.<br>
<br>
Tom<br>
<div><div class="h5"><br>
On Tue, Jul 30, 2013 at 7:10 PM, Gavin Sharp <<a href="mailto:gavin@gavinsharp.com">gavin@gavinsharp.com</a>> wrote:<br>
> I've mentioned this at the engineering meeting, but thought it worth a note<br>
> here just to ensure everyone is aware:<br>
><br>
> Bug 870100 enabled use of the background thumbnail service in Firefox<br>
> desktop, which uses a <browser remote=true> to do thumbnailing of pages in<br>
> the background.<br>
><br>
> That means that desktop Firefox now makes use of E10S content processes.<br>
> They have a short life time (one page load) and are generally triggered by<br>
> opening about:newtab when thumbnails are missing or out of date (>2 days<br>
> old).<br>
><br>
> This has exposed some e10s crashes that previously weren't exposed on<br>
> desktop. I've filed <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=899758" target="_blank">https://bugzilla.mozilla.org/show_bug.cgi?id=899758</a> to<br>
> track them - please hang any other such crashes off that bug. If you're<br>
> working in a component that has e10s-related crashes, please fix them :)<br>
><br>
> (Bug 891218 is also planning to make use of content processes for some<br>
> Social-related functionality. Those remote processes will be longer-lived,<br>
> typically having the same lifetime as the parent process.)<br>
><br>
> Gavin<br>
><br>
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</blockquote></div><br></div>