<div dir="ltr"><div>Hi all,</div><div><br></div><div>Now that we've removed all of the existing shadow DOM implementations from trunk in <a href="http://trac.webkit.org/changeset/164131">http://trac.webkit.org/changeset/164131</a>, I'm intending to work on new web components implementations in a branch based on the feedback Apple has given on public-webapps and www-style in near future, probably starting with custom elements.</div>
<div><br></div><div>I'd like to implement them in a branch to not inadvertently introduce performance regressions. The old implementation on trunk resulted in 5% overall slowdown in the page load time but we didn't quantify that until we removed the feature entirely last year. That's probably because the feature was added over years as a pile of small changesets each of which introduced immeasurably small performance regressions. Development in a branch allows a faithful performance comparison between the two.</div>
<div><br></div><div><div>- R. Niwa</div><div><br></div>
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